View source for Bounded gaps between primes

This is the home page for the Polymath8 project "bounded gaps between primes".

== World records ==

* <math>H</math> is a quantity such that there are infinitely many pairs of consecutive primes of distance at most <math>H</math> apart.  Would like to be as small as possible (this is a primary goal of the Polymath8 project).  
* <math>k_0</math> is a quantity such that every admissible <math>k_0</math>-tuple has infinitely many translates which each contain at least two primes.  Would like to be as small as possible.  Improvements in <math>k_0</math> lead to improvements in <math>H</math>.  (The relationship is roughly of the form <math>H \sim k_0 \log k_0</math>; see the page on [[finding narrow admissible tuples]].)  
* <math>\varpi</math> is a technical parameter related to a specialized form of the [http://en.wikipedia.org/wiki/Elliott%E2%80%93Halberstam_conjecture Elliott-Halberstam conjecture].  Would like to be as large as possible.  Improvements in <math>\varpi</math> lead to improvements in <math>k_0</math>, as described in the page on [[Dickson-Hardy-Littlewood theorems]]. In more recent work, the single parameter <math>\varpi</math> is replaced by a pair <math>(\varpi,\delta)</math> (in previous work we had <math>\delta=\varpi</math>).  These estimates are obtained in turn from Type I, Type II, and Type III estimates, as described at the page on [[distribution of primes in smooth moduli]].  

In this table, infinitesimal losses in <math>\delta,\varpi</math> are ignored.

{| border=1
|-
!Date!!<math>\varpi</math> or <math>(\varpi,\delta)</math>!! <math>k_0</math> !! <math>H</math> !! Comments
|-
| 14 May 
| 1/1,168 ([http://annals.math.princeton.edu/wp-content/uploads/YitangZhang.pdf Zhang]) 
| 3,500,000 ([http://annals.math.princeton.edu/wp-content/uploads/YitangZhang.pdf Zhang])
| 70,000,000 ([http://annals.math.princeton.edu/wp-content/uploads/YitangZhang.pdf Zhang])
| All subsequent work is based on Zhang's breakthrough paper.
|-
| 21 May
|
|
| 63,374,611 ([http://mathoverflow.net/questions/131185/philosophy-behind-yitang-zhangs-work-on-the-twin-primes-conjecture/131354#131354 Lewko])
| Optimises Zhang's condition <math>\pi(H)-\pi(k_0) > k_0</math>; [http://sbseminar.wordpress.com/2013/05/30/i-just-cant-resist-there-are-infinitely-many-pairs-of-primes-at-most-59470640-apart/#comment-23439 can be reduced by 1] by parity considerations
|-
| 28 May
|
| 
| 59,874,594 ([http://arxiv.org/abs/1305.6369 Trudgian])
| Uses <math>(p_{m+1},\ldots,p_{m+k_0})</math> with <math>p_{m+1} > k_0</math>
|-
| 30 May
|
|
| 59,470,640 ([http://sbseminar.wordpress.com/2013/05/30/i-just-cant-resist-there-are-infinitely-many-pairs-of-primes-at-most-59470640-apart/ Morrison])
58,885,998? ([http://sbseminar.wordpress.com/2013/05/30/i-just-cant-resist-there-are-infinitely-many-pairs-of-primes-at-most-59470640-apart/#comment-23441 Tao])

59,093,364 ([http://sbseminar.wordpress.com/2013/05/30/i-just-cant-resist-there-are-infinitely-many-pairs-of-primes-at-most-59470640-apart/#comment-23444 Morrison])

57,554,086 ([http://sbseminar.wordpress.com/2013/05/30/i-just-cant-resist-there-are-infinitely-many-pairs-of-primes-at-most-59470640-apart/#comment-23448 Morrison])
| Uses <math>(p_{m+1},\ldots,p_{m+k_0})</math> and then <math>(\pm 1, \pm p_{m+1}, \ldots, \pm p_{m+k_0/2-1})</math> following [HR1973], [HR1973b], [R1974] and optimises in m
|-
| 31 May
|
| 2,947,442 ([http://sbseminar.wordpress.com/2013/05/30/i-just-cant-resist-there-are-infinitely-many-pairs-of-primes-at-most-59470640-apart/#comment-23460 Morrison])
2,618,607 ([http://sbseminar.wordpress.com/2013/05/30/i-just-cant-resist-there-are-infinitely-many-pairs-of-primes-at-most-59470640-apart/#comment-23467 Morrison])
| 48,112,378 ([http://sbseminar.wordpress.com/2013/05/30/i-just-cant-resist-there-are-infinitely-many-pairs-of-primes-at-most-59470640-apart/#comment-23460 Morrison])
42,543,038 ([http://sbseminar.wordpress.com/2013/05/30/i-just-cant-resist-there-are-infinitely-many-pairs-of-primes-at-most-59470640-apart/#comment-23467 Morrison])

42,342,946 ([http://sbseminar.wordpress.com/2013/05/30/i-just-cant-resist-there-are-infinitely-many-pairs-of-primes-at-most-59470640-apart/#comment-23468 Morrison])
| Optimizes Zhang's condition <math>\omega>0</math>, and then uses an [http://sbseminar.wordpress.com/2013/05/30/i-just-cant-resist-there-are-infinitely-many-pairs-of-primes-at-most-59470640-apart/#comment-23465 improved bound] on <math>\delta_2</math>
|-
| 1 Jun
|
|
| 42,342,924 ([http://sbseminar.wordpress.com/2013/05/30/i-just-cant-resist-there-are-infinitely-many-pairs-of-primes-at-most-59470640-apart/#comment-23473 Tao])
| Tiny improvement using the parity of <math>k_0</math>
|-
| 2 Jun
|
| 866,605 ([http://sbseminar.wordpress.com/2013/05/30/i-just-cant-resist-there-are-infinitely-many-pairs-of-primes-at-most-59470640-apart/#comment-23479 Morrison])
| 13,008,612 ([http://sbseminar.wordpress.com/2013/05/30/i-just-cant-resist-there-are-infinitely-many-pairs-of-primes-at-most-59470640-apart/#comment-23479 Morrison])
| Uses a [http://sbseminar.wordpress.com/2013/05/30/i-just-cant-resist-there-are-infinitely-many-pairs-of-primes-at-most-59470640-apart/#comment-23473 further improvement] on the quantity <math>\Sigma_2</math> in Zhang's analysis (replacing the previous bounds on <math>\delta_2</math>)
|-
| 3 Jun
| 1/1,040? ([http://mathoverflow.net/questions/132632/tightening-zhangs-bound-closed v08ltu])
| 341,640 ([http://sbseminar.wordpress.com/2013/05/30/i-just-cant-resist-there-are-infinitely-many-pairs-of-primes-at-most-59470640-apart/#comment-23512 Morrison])
| 4,982,086 ([http://sbseminar.wordpress.com/2013/05/30/i-just-cant-resist-there-are-infinitely-many-pairs-of-primes-at-most-59470640-apart/#comment-23512 Morrison])
4,802,222 ([http://sbseminar.wordpress.com/2013/05/30/i-just-cant-resist-there-are-infinitely-many-pairs-of-primes-at-most-59470640-apart/#comment-23516 Morrison])
| Uses a [http://terrytao.wordpress.com/2013/06/03/the-prime-tuples-conjecture-sieve-theory-and-the-work-of-goldston-pintz-yildirim-motohashi-pintz-and-zhang/ different method] to establish <math>DHL[k_0,2]</math> that removes most of the inefficiency from Zhang's method.
|-
| 4 Jun
| 1/224?? ([http://polymathprojects.org/2013/06/04/polymath-proposal-bounded-gaps-between-primes/#comment-19961 v08ltu])
1/240?? ([http://terrytao.wordpress.com/2013/06/04/online-reading-seminar-for-zhangs-bounded-gaps-between-primes/#comment-232661 v08ltu])
|
| 4,801,744 ([http://sbseminar.wordpress.com/2013/05/30/i-just-cant-resist-there-are-infinitely-many-pairs-of-primes-at-most-59470640-apart/#comment-23534 Sutherland])
4,788,240 ([http://sbseminar.wordpress.com/2013/05/30/i-just-cant-resist-there-are-infinitely-many-pairs-of-primes-at-most-59470640-apart/#comment-23543 Sutherland])
| Uses asymmetric version of the Hensley-Richards tuples
|-
| 5 Jun
|
| 34,429? ([http://terrytao.wordpress.com/2013/06/03/the-prime-tuples-conjecture-sieve-theory-and-the-work-of-goldston-pintz-yildirim-motohashi-pintz-and-zhang/#comment-232721 Paldi]/[http://terrytao.wordpress.com/2013/06/03/the-prime-tuples-conjecture-sieve-theory-and-the-work-of-goldston-pintz-yildirim-motohashi-pintz-and-zhang/#comment-232732 v08ltu])
34,429? ([http://terrytao.wordpress.com/2013/06/03/the-prime-tuples-conjecture-sieve-theory-and-the-work-of-goldston-pintz-yildirim-motohashi-pintz-and-zhang/#comment-232840 Tao]/[http://terrytao.wordpress.com/2013/06/03/the-prime-tuples-conjecture-sieve-theory-and-the-work-of-goldston-pintz-yildirim-motohashi-pintz-and-zhang/#comment-232843 v08ltu]/[http://terrytao.wordpress.com/2013/06/03/the-prime-tuples-conjecture-sieve-theory-and-the-work-of-goldston-pintz-yildirim-motohashi-pintz-and-zhang/#comment-232877 Harcos])
| 4,725,021 ([http://sbseminar.wordpress.com/2013/05/30/i-just-cant-resist-there-are-infinitely-many-pairs-of-primes-at-most-59470640-apart/#comment-23555 Elsholtz])
4,717,560 ([http://sbseminar.wordpress.com/2013/05/30/i-just-cant-resist-there-are-infinitely-many-pairs-of-primes-at-most-59470640-apart/#comment-23562 Sutherland])

397,110? ([http://sbseminar.wordpress.com/2013/05/30/i-just-cant-resist-there-are-infinitely-many-pairs-of-primes-at-most-59470640-apart/#comment-23563 Sutherland])

4,656,298 ([http://sbseminar.wordpress.com/2013/05/30/i-just-cant-resist-there-are-infinitely-many-pairs-of-primes-at-most-59470640-apart/#comment-23566 Sutherland])

389,922 ([http://sbseminar.wordpress.com/2013/05/30/i-just-cant-resist-there-are-infinitely-many-pairs-of-primes-at-most-59470640-apart/#comment-23566 Sutherland])

388,310 ([http://sbseminar.wordpress.com/2013/05/30/i-just-cant-resist-there-are-infinitely-many-pairs-of-primes-at-most-59470640-apart/#comment-23571 Sutherland])

388,284 ([http://sbseminar.wordpress.com/2013/05/30/i-just-cant-resist-there-are-infinitely-many-pairs-of-primes-at-most-59470640-apart/#comment-23570 Castryck])

388,248 ([http://sbseminar.wordpress.com/2013/05/30/i-just-cant-resist-there-are-infinitely-many-pairs-of-primes-at-most-59470640-apart/#comment-23573 Sutherland])

[http://math.mit.edu/~drew/admissable.txt 388,188] ([http://sbseminar.wordpress.com/2013/05/30/i-just-cant-resist-there-are-infinitely-many-pairs-of-primes-at-most-59470640-apart/#comment-23576 Sutherland])

387,982 ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23588 Castryck])

387,974 ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23591 Castryck])

| <math>k_0</math> bound uses the optimal Bessel function cutoff.  Originally only provisional due to neglect of the kappa error, but then it was confirmed that the kappa error was within the allowed tolerance.
<math>H</math> bound obtained by a hybrid Schinzel/greedy (or "greedy-greedy") sieve 

|-
| 6 Jun
| <strike>(1/488,3/9272)</strike> ([http://arxiv.org/abs/1306.1497 Pintz]) 
<strike>1/552</strike> ([http://arxiv.org/abs/1306.1497 Pintz], [http://terrytao.wordpress.com/2013/06/03/the-prime-tuples-conjecture-sieve-theory-and-the-work-of-goldston-pintz-yildirim-motohashi-pintz-and-zhang/#comment-233149 Tao])
| <strike>60,000*</strike> ([http://arxiv.org/abs/1306.1497 Pintz])

<strike>52,295*</strike> ([http://terrytao.wordpress.com/2013/06/03/the-prime-tuples-conjecture-sieve-theory-and-the-work-of-goldston-pintz-yildirim-motohashi-pintz-and-zhang/#comment-233150 Peake])

<strike>11,123</strike> ([http://terrytao.wordpress.com/2013/06/03/the-prime-tuples-conjecture-sieve-theory-and-the-work-of-goldston-pintz-yildirim-motohashi-pintz-and-zhang/#comment-233151 Tao])
| 387,960 ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23598 Angelveit])
[http://math.mit.edu/~drew/admissable_34429_387910.txt 387,910] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23599 Sutherland])

387,904 ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23602 Angeltveit])

[http://math.mit.edu/~drew/admissable_34429_387814.txt 387,814] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23605 Sutherland])

[http://math.mit.edu/~drew/admissable_34429_387766.txt 387,766] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23608 Sutherland])

[http://math.mit.edu/~drew/admissable_34429_387754.txt 387,754] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23613 Sutherland])

[http://math.mit.edu/~drew/admissable_34429_387620.txt 387,620] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23652 Sutherland])

<strike>768,534*</strike> ([http://arxiv.org/abs/1306.1497 Pintz]) 

| Improved <math>H</math>-bounds based on experimentation with different residue classes and different intervals, and randomized tie-breaking in the greedy sieve.
|-
| 7 Jun
| <strike>(1/538, 1/660)</strike> ([http://terrytao.wordpress.com/2013/06/03/the-prime-tuples-conjecture-sieve-theory-and-the-work-of-goldston-pintz-yildirim-motohashi-pintz-and-zhang/#comment-233178 v08ltu])
<strike>(1/538, 31/20444)</strike> ([http://terrytao.wordpress.com/2013/06/03/the-prime-tuples-conjecture-sieve-theory-and-the-work-of-goldston-pintz-yildirim-motohashi-pintz-and-zhang/#comment-233182 v08ltu])

<strike>(1/942, 19/27004)</strike> ([http://terrytao.wordpress.com/2013/06/03/the-prime-tuples-conjecture-sieve-theory-and-the-work-of-goldston-pintz-yildirim-motohashi-pintz-and-zhang/#comment-233321 v08ltu])

<math>828 \varpi + 172\delta < 1</math> ([http://terrytao.wordpress.com/2013/06/03/the-prime-tuples-conjecture-sieve-theory-and-the-work-of-goldston-pintz-yildirim-motohashi-pintz-and-zhang/#comment-233321 v08ltu]/[http://terrytao.wordpress.com/2013/06/04/online-reading-seminar-for-zhangs-bounded-gaps-between-primes/#comment-233400 Green])
| <strike>11,018</strike> ([http://terrytao.wordpress.com/2013/06/03/the-prime-tuples-conjecture-sieve-theory-and-the-work-of-goldston-pintz-yildirim-motohashi-pintz-and-zhang/#comment-233167 Tao])
<strike>10,721</strike> ([http://terrytao.wordpress.com/2013/06/03/the-prime-tuples-conjecture-sieve-theory-and-the-work-of-goldston-pintz-yildirim-motohashi-pintz-and-zhang/#comment-233178 v08ltu])

<strike>10,719</strike> ([http://terrytao.wordpress.com/2013/06/03/the-prime-tuples-conjecture-sieve-theory-and-the-work-of-goldston-pintz-yildirim-motohashi-pintz-and-zhang/#comment-233182 v08ltu])

<strike>25,111</strike> ([http://terrytao.wordpress.com/2013/06/03/the-prime-tuples-conjecture-sieve-theory-and-the-work-of-goldston-pintz-yildirim-motohashi-pintz-and-zhang/#comment-233321 v08ltu])

26,024? ([http://terrytao.wordpress.com/2013/06/03/the-prime-tuples-conjecture-sieve-theory-and-the-work-of-goldston-pintz-yildirim-motohashi-pintz-and-zhang/#comment-233364 vo8ltu])
| <strike>[http://maths-people.anu.edu.au/~angeltveit/admissible_11123_113520.txt 113,520]?</strike> ([http://maths-people.anu.edu.au/~angeltveit/admissible_11123_113520.txt Angeltveit])
<strike>[http://maths-people.anu.edu.au/~angeltveit/admissible_10721_109314.txt 109,314]?</strike> ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23663 Angeltveit/Sutherland])

<strike>[http://math.mit.edu/~drew/admissable_60000_707328.txt 707,328*]</strike> ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23666 Sutherland])

<strike>[http://math.mit.edu/~drew/admissable_10721_108990.txt 108,990]</strike> ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23666 Sutherland])

<strike>[http://math.mit.edu/~drew/admissable_11123_113462.txt 113,462*]</strike> ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23667 Sutherland])

<strike>[http://math.mit.edu/~drew/admissable_11018_112302.txt 112,302*]</strike> ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23667 Sutherland])

<strike>[http://math.mit.edu/~drew/admissable_11018_112272.txt 112,272*]</strike> ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23669 Sutherland])

<strike>116,386*</strike> ([http://polymathprojects.org/2013/06/04/polymath-proposal-bounded-gaps-between-primes/#comment-20116 Sun])

<strike>[http://math.mit.edu/~drew/admissable_10719_108978.txt 108,978]</strike> ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23675 Sutherland])

<strike>[http://math.mit.edu/~drew/admissable_10719_108634.txt 108,634]</strike> ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23677 Sutherland])

<strike>[https://perswww.kuleuven.be/~u0040935/108632.txt 108,632]</strike> ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23680 Castryck])

<strike>[http://math.mit.edu/~drew/admissable_10719_108600.txt 108,600]</strike> ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23682 Sutherland])

<strike>[https://perswww.kuleuven.be/~u0040935/108570.txt 108,570]</strike> ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23683 Castryck])

<strike>[http://math.mit.edu/~drew/admissable_10719_108556.txt 108,556]</strike> ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23684 Sutherland])

<strike>[http://www.cs.cmu.edu/~xfxie/project/admissible/admissable_10719_108550.txt 108,550]</strike> ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23688 xfxie])

<strike>[http://math.mit.edu/~drew/admissable_25111_275424.txt 275,424]</strike> ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23694 Sutherland])

<strike>[http://math.mit.edu/~drew/admissable_10719_108540.txt 108,540]</strike> ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23695 Sutherland])

<strike>[http://math.mit.edu/~drew/admissable_25111_275418.txt 275,418]</strike> ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23697 Sutherland])

<strike>[http://math.mit.edu/~drew/admissable_25111_275404.txt 275,404]</strike> ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23699 Sutherland])

<strike>[https://perswww.kuleuven.be/~u0040935/25111_275292.txt 275,292]</strike> ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23701 Castryck-Sutherland])

<strike>275,262</strike> ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23703 Castryck]-[http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23702 pedant]-Sutherland)

<strike>[http://www.cs.cmu.edu/~xfxie/project/admissible/admissible_25111_275388.txt 275,388*]</strike> ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23704 xfxie]-Sutherland)

<strike>[https://perswww.kuleuven.be/~u0040935/25111_275126.txt 275,126]</strike> ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23706 Castryck]-pedant-Sutherland)

<strike>274,970</strike> ([https://www.dropbox.com/sh/jjxi0jmcskx1xcz/iBBVwZTj-x Castryck-pedant-Sutherland])

<strike>[http://www.cs.cmu.edu/~xfxie/project/admissible/admissible_25111_275208.txt 275,208]</strike>* ([http://www.cs.cmu.edu/~xfxie/project/admissible/admissible_25111_275208.txt xfxie])

387,534 ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23716 pedant-Sutherland])
| Many of the results ended up being retracted due to a number of issues found in the most recent preprint of Pintz.
|-
| Jun 8
|
|
| [http://math.mit.edu/~drew/admissable_26024_286224.txt 286,224] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23720 Sutherland])
[http://math.mit.edu/~drew/admissable_26024_285810.txt 285,810] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23722 Sutherland])

[http://www.cs.cmu.edu/~xfxie/project/admissible/admissible_26024_286216.txt 286,216] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23723 xfxie-Sutherland])

[http://math.mit.edu/~drew/admissable_34429_386750.txt 386,750]* ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23728 Sutherland])

285,752 ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23725 pedant-Sutherland])

[http://math.mit.edu/~drew/admissable_26024_285456.txt 285,456] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23748 Sutherland])
| values of <math>\varpi,\delta,k_0</math> now confirmed; most tuples available [https://www.dropbox.com/sh/jjxi0jmcskx1xcz/iBBVwZTj-x on dropbox].  New bounds on <math>H</math> obtained via iterated merging using a randomized greedy sieve.
|-
| Jun 9
|
| 181,000*? ([http://arxiv.org/abs/1306.1497 Pintz])
| 2,530,338*? ([http://arxiv.org/abs/1306.1497 Pintz])
[http://math.mit.edu/~drew/admissible_26024_285278.txt 285,278] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23765 Sutherland]/[http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23763 xfxie])

[http://math.mit.edu/~drew/admissible_26024_285272.txt 285,272] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23779 Sutherland])

[http://math.mit.edu/~drew/admissible_26024_285248.txt 285,248] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23787 Sutherland])

[http://www.cs.cmu.edu/~xfxie/project/admissible/admissible_26024_285246.txt 285,246] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23790 xfxie-Sutherland])

[http://math.mit.edu/~drew/admissible_26024_285232.txt 285,232] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23791 Sutherland])
| New bounds on <math>H</math> obtained by interleaving iterated merging with local optimizations.
|-
| Jun 10
|
| 23,283? ([http://terrytao.wordpress.com/2013/06/08/the-elementary-selberg-sieve-and-bounded-prime-gaps/#comment-233831 Harcos]/[http://terrytao.wordpress.com/2013/06/08/the-elementary-selberg-sieve-and-bounded-prime-gaps/#comment-233850 v08ltu])
| [http://math.mit.edu/~drew/admissible_26024_285210.txt 285,210] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23795 Sutherland])

[http://www.cs.cmu.edu/~xfxie/project/admissible/admissible_23283_253118.txt 253,118] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23812 xfxie])

[http://math.mit.edu/~drew/admissible_34429_386532.txt 386,532*] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23813 Sutherland])

[http://math.mit.edu/~drew/admissible_23283_253048.txt 253,048] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23815 Sutherland])

[http://math.mit.edu/~drew/admissible_23283_252990.txt 252,990] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23817 Sutherland])

[http://math.mit.edu/~drew/admissible_23283_252976.txt 252,976] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23823 Sutherland])
| More efficient control of the <math>\kappa</math> error using the fact that numbers with no small prime factor are usually coprime
|-
| Jun 11
|
| 
| [http://math.mit.edu/~drew/admissible_23283_252804.txt 252,804] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23840 Sutherland])

[http://math.mit.edu/~drew/admissible_181000_2345896.txt 2,345,896*] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23846 Sutherland])
| More refined local "adjustment" optimizations, as detailed [http://michaelnielsen.org/polymath1/index.php?title=Finding_narrow_admissible_tuples#Local_optimizations here].
An issue with the <math>k_0</math> computation has been discovered, but is in the process of being repaired.
|-
| Jun 12
|
| 22,951 ([http://terrytao.wordpress.com/2013/06/11/further-analysis-of-the-truncated-gpy-sieve/ Tao]/[http://terrytao.wordpress.com/2013/06/11/further-analysis-of-the-truncated-gpy-sieve/#comment-234113 v08ltu])
22,949 ([http://terrytao.wordpress.com/2013/06/11/further-analysis-of-the-truncated-gpy-sieve/#comment-234157 Harcos])
| 249,180 ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23871 Castryck])

[http://math.mit.edu/~drew/admissible_22949_249046.txt 249,046] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23872 Sutherland])

[http://math.mit.edu/~drew/admissible_22949_249034.txt 249,034] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23874 Sutherland])
| Improved bound on <math>k_0</math> avoids the technical issue in previous computations.
|-
| Jun 13
|
|
| 

[http://math.mit.edu/~drew/admissible_22949_248970.txt 248,970] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23893 Sutherland])

[http://math.mit.edu/~drew/admissible_22949_248910.txt 248,910] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23903 Sutherland])
| 
|-
| Jun 14
|
|
|[http://math.mit.edu/~drew/admissible_22949_248898.txt 248,898] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23909 Sutherland])
|
|-
| Jun 15
| <math>348\varpi+68\delta < 1</math>? ([http://terrytao.wordpress.com/2013/06/14/estimation-of-the-type-iii-sums/#comment-234670 Tao])
| 6,330? ([http://terrytao.wordpress.com/2013/06/14/estimation-of-the-type-iii-sums/#comment-234677 v08ltu])
6,329? ([http://terrytao.wordpress.com/2013/06/14/estimation-of-the-type-iii-sums/#comment-234687 Harcos])

6,329 ([http://terrytao.wordpress.com/2013/06/14/estimation-of-the-type-iii-sums/#comment-234693 v08ltu])
| [http://math.mit.edu/~drew/admissible_6330_60830.txt 60,830?] ([http://terrytao.wordpress.com/2013/06/14/estimation-of-the-type-iii-sums/#comment-234686 Sutherland])

[http://math.mit.edu/~drew/admissible_6329_60812.txt 60,812?] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23940 Sutherland]) 

[http://www.cs.cmu.edu/~xfxie/project/admissible/admissible_6329_60764_-67290.txt 60,764] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23944 xfxie])

[http://www.cs.cmu.edu/~xfxie/project/admissible/admissible_6330_60772_2836.txt 60,772*] ([http://www.cs.cmu.edu/~xfxie/project/admissible/admissible_6330_60772_2836.txt xfxie])

[http://www.cs.cmu.edu/~xfxie/project/admissible/admissible_6329_60760_-67438.txt 60,760] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23949 xfxie])
| Taking more advantage of the <math>\alpha</math> convolution in the Type III sums
|-
| Jun 16
| <math>348\varpi+68\delta < 1</math> ([http://terrytao.wordpress.com/2013/06/14/estimation-of-the-type-iii-sums/#comment-234742 v08ltu])

<strike>155\varpi+31\delta < 1 and 220\varpi + 60\delta < 1 ([http://terrytao.wordpress.com/2013/06/14/estimation-of-the-type-iii-sums/#comment-234779 Tao])</strike>
| <strike>3,405 ([http://terrytao.wordpress.com/2013/06/14/estimation-of-the-type-iii-sums/#comment-234805 v08ltu])</strike>
| [http://math.mit.edu/~drew/admissible_6330_60760.txt 60,760*] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23951 Sutherland])

[http://math.mit.edu/~drew/admissible_6329_60756.txt 60,756] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23951 Sutherland])

[http://www.cs.cmu.edu/~xfxie/project/admissible/admissible_6330_60754_2854.txt 60,754] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23954 xfxie])

[http://math.mit.edu/~drew/admissible_6329_60744.txt 60,744] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23952 Sutherland])

<strike>[http://math.mit.edu/~drew/admissible_3405_30610.txt 30,610*] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23969 Sutherland])</strike>

<strike>30,606 ([http://www.opertech.com/primes/summary.txt Engelsma])</strike>

<strike>[http://math.mit.edu/~drew/admissible_3405_30600.txt 30,600] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23970 Sutherland])</strike>
| Attempting to make the Weyl differencing more efficient; unfortunately, it did not work
|-
| Jun 18
|
| 5,937? (Pintz/[http://terrytao.wordpress.com/2013/06/18/a-truncated-elementary-selberg-sieve-of-pintz Tao]/[http://terrytao.wordpress.com/2013/06/18/a-truncated-elementary-selberg-sieve-of-pintz/#comment-235124 v08ltu])

5,672? ([http://terrytao.wordpress.com/2013/06/18/a-truncated-elementary-selberg-sieve-of-pintz/#comment-235135 v08ltu])

5,459? ([http://terrytao.wordpress.com/2013/06/18/a-truncated-elementary-selberg-sieve-of-pintz/#comment-235145 v08ltu])

5,454? ([http://terrytao.wordpress.com/2013/06/18/a-truncated-elementary-selberg-sieve-of-pintz/#comment-235147 v08ltu])

5,453? ([http://terrytao.wordpress.com/2013/06/18/a-truncated-elementary-selberg-sieve-of-pintz/#comment-235150 v08ltu])

| [http://www.cs.cmu.edu/~xfxie/project/admissible/admissible_6329_60740_-63166.txt 60,740] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23992 xfxie])

[http://math.mit.edu/~drew/admissible_6329_60732 60,732] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-23999 Sutherland])

[http://www.cs.cmu.edu/~xfxie/project/admissible/admissible_6329_60726_14.txt 60,726] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-24002 xfxie]-Sutherland)

58,866? ([http://polymathprojects.org/2013/06/04/polymath-proposal-bounded-gaps-between-primes/#comment-20771 Sun])

[http://math.mit.edu/~drew/admissible_5937_56660.txt 56,660?] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-24019 Sutherland])

[http://math.mit.edu/~drew/admissible_5937_56640.txt 56,640?] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-24020 Sutherland])

53,898? ([http://polymathprojects.org/2013/06/04/polymath-proposal-bounded-gaps-between-primes/#comment-20771 Sun]) 

53,842? ([http://polymathprojects.org/2013/06/04/polymath-proposal-bounded-gaps-between-primes/#comment-20773 Sun])
| A new truncated sieve of Pintz virtually eliminates the influence of <math>\delta</math>
|-
| Jun 19
|
| 5,455? ([http://terrytao.wordpress.com/2013/06/18/a-truncated-elementary-selberg-sieve-of-pintz/#comment-235147 v08ltu])

5,453? ([http://terrytao.wordpress.com/2013/06/18/a-truncated-elementary-selberg-sieve-of-pintz/#comment-235315 v08ltu])

5,452? ([http://terrytao.wordpress.com/2013/06/18/a-truncated-elementary-selberg-sieve-of-pintz/#comment-235316 v08ltu])
| [http://math.nju.edu.cn/~zwsun/admissible_5453_53774.txt 53,774?] ([http://polymathprojects.org/2013/06/04/polymath-proposal-bounded-gaps-between-primes/#comment-20779 Sun])

[http://math.mit.edu/~drew/admissible_5453_51544.txt 51,544?] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-24022 Sutherland])

[http://www.cs.cmu.edu/~xfxie/project/admissible/admissible_5455_51540_4678.txt 51,540?] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-24050 xfxie]/[http://math.mit.edu/~drew/admissible_5455_51540.txt Sutherland])

[http://math.mit.edu/~drew/admissible_5453_51532.txt 51,532?] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-24023 Sutherland])

[http://math.mit.edu/~drew/admissible_5453_51526.txt 51,526?] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-24024 Sutherland])

53,672*? ([http://polymathprojects.org/2013/06/04/polymath-proposal-bounded-gaps-between-primes/#comment-20837 Sun])

[http://math.mit.edu/~drew/admissible_5452_51520.txt 51,520?] ([http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/#comment-24060 Sutherland]/[http://polymathprojects.org/2013/06/04/polymath-proposal-bounded-gaps-between-primes/#comment-20845 Hou-Sun])
| Some typos in <math>\kappa_3</math> estimation had placed the 5,454 and 5,453 values of <math>k_0</math> into doubt; however other refinements have counteracted this
|- 
| Jun 20
| <math>178\varpi + 52\delta < 1</math>? ([http://terrytao.wordpress.com/2013/06/12/estimation-of-the-type-i-and-type-ii-sums/#comment-235463 Tao])

<math>148\varpi + 33\delta < 1</math>? ([http://terrytao.wordpress.com/2013/06/12/estimation-of-the-type-i-and-type-ii-sums/#comment-235467 Tao])
|
|
| Replaced "completion of sums + Weil bounds" in estimation of incomplete Kloosterman-type sums by "Fourier transform + Weyl differencing + Weil bounds", taking advantage of factorability of moduli
|-
| Jun 21
| <math>148\varpi + 33\delta < 1</math> ([http://terrytao.wordpress.com/2013/06/12/estimation-of-the-type-i-and-type-ii-sums/#comment-235544 v08ltu])
| 1,470 ([http://terrytao.wordpress.com/2013/06/12/estimation-of-the-type-i-and-type-ii-sums/#comment-235545 v08ltu])

1,467 ([http://terrytao.wordpress.com/2013/06/12/estimation-of-the-type-i-and-type-ii-sums/#comment-235559 v08ltu])
| [http://www.opertech.com/primes/webdata/k1000-1999/k1400-1499/k1470_12042.txt 12,042] ([http://www.opertech.com/primes/webdata/k1000-1999/k1400-1499/ Engelsma])

[http://www.opertech.com/primes/webdata/k1000-1999/k1400-1499/k1467_12012.txt 12,012] ([http://www.opertech.com/primes/webdata/k1000-1999/k1400-1499/ Engelsma])
| Systematic tables of tuples of small length have been set up [http://www.opertech.com/primes/webdata/ here] and [http://math.mit.edu/~drew/records9.txt here] (update: As of June 27 these tables have been merged and uploaded to an [http://math.mit.edu/~primegaps/ online database] of current bounds on <math>H(k)</math> for <math>k</math> up to 5000).
|-
| Jun 22
|
| <strike>1,466 ([http://terrytao.wordpress.com/2013/06/18/a-truncated-elementary-selberg-sieve-of-pintz/#comment-235740 Harcos]/[http://terrytao.wordpress.com/2013/06/18/a-truncated-elementary-selberg-sieve-of-pintz/#comment-235759 v08ltu])</strike>
| <strike>[http://www.opertech.com/primes/webdata/k1000-1999/k1400-1499/k1466_12006.txt 12,006] ([http://www.opertech.com/primes/webdata/k1000-1999/k1400-1499/ Engelsma])</strike>
| Slight improvement in the <math>\tilde \theta</math> parameter in the Pintz sieve; unfortunately, it does not seem to currently give an actual improvement to the optimal value of <math>k_0</math> 
|-
| Jun 23
|
| 1,466 ([http://terrytao.wordpress.com/2013/06/18/a-truncated-elementary-selberg-sieve-of-pintz/#comment-235891 Paldi]/[http://terrytao.wordpress.com/2013/06/18/a-truncated-elementary-selberg-sieve-of-pintz/#comment-235905 Harcos])
| [http://www.opertech.com/primes/webdata/k1000-1999/k1400-1499/k1466_12006.txt 12,006] ([http://www.opertech.com/primes/webdata/k1000-1999/k1400-1499/ Engelsma])
| An improved monotonicity formula for <math>G_{k_0-1,\tilde \theta}</math> reduces <math>\kappa_3</math> somewhat
|-
| Jun 24
| <math>(134 + \tfrac{2}{3}) \varpi + 28\delta \le 1</math>? ([http://terrytao.wordpress.com/2013/06/23/the-distribution-of-primes-in-densely-divisible-moduli/#comment-235956 v08ltu])

<math>140\varpi + 32 \delta < 1</math>? ([http://terrytao.wordpress.com/2013/06/23/the-distribution-of-primes-in-densely-divisible-moduli/#comment-236025 Tao])

<strike>1/88?? ([http://terrytao.wordpress.com/2013/06/22/bounding-short-exponential-sums-on-smooth-moduli-via-weyl-differencing/#comment-236039 Tao])</strike>

<strike>1/74?? ([http://terrytao.wordpress.com/2013/06/22/bounding-short-exponential-sums-on-smooth-moduli-via-weyl-differencing/#comment-236039 Tao])</strike>
| 1,268? ([http://terrytao.wordpress.com/2013/06/23/the-distribution-of-primes-in-densely-divisible-moduli/#comment-235956 v08ltu])
| [http://www.opertech.com/primes/webdata/k1000-1999/k1200-1299/k1268_10206.txt 10,206?] ([http://www.opertech.com/primes/webdata/k1000-1999/k1200-1299/ Engelsma])
| A theoretical gain from rebalancing the exponents in the Type I exponential sum estimates
|-
| Jun 25
| <math>116\varpi+30\delta<1</math>? ([http://blogs.ethz.ch/kowalski/2013/06/25/a-ternary-divisor-variation Fouvry-Kowalski-Michel-Nelson]/[http://terrytao.wordpress.com/2013/06/23/the-distribution-of-primes-in-densely-divisible-moduli/#comment-236237 Tao])
| 1,346? ([http://terrytao.wordpress.com/2013/06/23/the-distribution-of-primes-in-densely-divisible-moduli/#comment-236123 Hannes])

<strike>502?? ([http://terrytao.wordpress.com/2013/06/22/bounding-short-exponential-sums-on-smooth-moduli-via-weyl-differencing/#comment-236162 Trevino])</strike>

1,007? ([http://terrytao.wordpress.com/2013/06/23/the-distribution-of-primes-in-densely-divisible-moduli/#comment-236242 Hannes])
| [http://www.opertech.com/primes/webdata/k1000-1999/k1300-1399/k1346_10876.txt 10,876]? ([http://www.opertech.com/primes/webdata/k1000-1999/k1300-1399/ Engelsma])

<strike>[http://www.opertech.com/primes/webdata/k2-999/k500-599/k502_3612.txt 3,612]?? ([http://www.opertech.com/primes/webdata/k2-999/k500-599/ Engelsma])</strike>

[http://www.opertech.com/primes/webdata/k1000-1999/k1000-1099/k1007_7860.txt 7,860]? ([http://www.opertech.com/primes/webdata/k1000-1999/k1000-1099/ Engelsma])

| Optimistic projections arise from combining the Graham-Ringrose numerology with the announced Fouvry-Kowalski-Michel-Nelson results on d_3 distribution
|- 
| Jun 26
| <math>116\varpi + 25.5 \delta < 1</math>? ([http://terrytao.wordpress.com/2013/06/23/the-distribution-of-primes-in-densely-divisible-moduli/#comment-236346 Nielsen])

<math>(112 + \tfrac{4}{7}) \varpi + (27 + \tfrac{6}{7}) \delta < 1</math>? ([http://terrytao.wordpress.com/2013/06/23/the-distribution-of-primes-in-densely-divisible-moduli/#comment-236387 Tao])
| 962? ([http://terrytao.wordpress.com/2013/06/23/the-distribution-of-primes-in-densely-divisible-moduli/#comment-236406 Hannes])
| [http://www.opertech.com/primes/webdata/k2-999/k900-999/k962_7470.txt 7,470]? ([http://www.opertech.com/primes/webdata/k2-999/k900-999 Engelsma])
| Beginning to flesh out various "levels" of Type I, Type II, and Type III estimates, see [[Distribution of primes in smooth moduli|this page]], in particular optimising van der Corput in the Type I sums.  Integrated tuples page [http://math.mit.edu/~primegaps/ now online].
|-
| Jun 27
| <math>108\varpi + 30 \delta < 1</math>? ([http://terrytao.wordpress.com/2013/06/23/the-distribution-of-primes-in-densely-divisible-moduli/#comment-236502 Tao])
| 902? ([http://terrytao.wordpress.com/2013/06/23/the-distribution-of-primes-in-densely-divisible-moduli/#comment-236507 Hannes])
| [http://math.mit.edu/~primegaps/tuples/admissible_902_6966.txt 6,966]? ([http://math.mit.edu/~primegaps/ Engelsma])
| Improved the Type III estimates by averaging in <math>\alpha</math>; also some slight improvements to the Type II sums.  [http://math.mit.edu/~primegaps/ Tuples page] is now accepting submissions.
|-
| Jul 1
| <math>(93 + \frac{1}{3}) \varpi + (26 + \frac{2}{3}) \delta < 1</math>? ([http://terrytao.wordpress.com/2013/06/30/bounded-gaps-between-primes-polymath8-a-progress-report/#comment-237087 Tao])
|
873? ([http://terrytao.wordpress.com/2013/06/30/bounded-gaps-between-primes-polymath8-a-progress-report/#comment-237160 Hannes])

<strike>872? ([http://terrytao.wordpress.com/2013/06/30/bounded-gaps-between-primes-polymath8-a-progress-report/#comment-237181 xfxie])</strike>
|
[http://math.mit.edu/~primegaps/tuples/admissible_873_6712.txt 6,712?] ([http://math.mit.edu/~primegaps/ Sutherland])

<strike>[http://math.mit.edu/~primegaps/tuples/admissible_872_6696.txt 6,696?] ([http://math.mit.edu/~primegaps/ Engelsma])</strike>
| Refactored the final Cauchy-Schwarz in the Type I sums to rebalance the off-diagonal and diagonal contributions
|-
| Jul 5
| <math> (93 + \frac{1}{3}) \varpi + (26 + \frac{2}{3}) \delta < 1</math>? ([http://terrytao.wordpress.com/2013/06/30/bounded-gaps-between-primes-polymath8-a-progress-report/#comment-237306 Tao])
|
720? ([http://terrytao.wordpress.com/2013/06/30/bounded-gaps-between-primes-polymath8-a-progress-report/#comment-237324 xfxie]/[http://terrytao.wordpress.com/2013/06/30/bounded-gaps-between-primes-polymath8-a-progress-report/#comment-237489 Harcos])
|
[http://math.mit.edu/~primegaps/tuples/admissible_720_5414.txt 5,414?] ([http://math.mit.edu/~primegaps/ Engelsma])
|
Weakened the assumption of <math>x^\delta</math>-smoothness of the original moduli to that of double <math>x^\delta</math>-dense divisibility
|-
| Jul 10
| 7/600? ([http://terrytao.wordpress.com/2013/07/07/the-distribution-of-primes-in-doubly-densely-divisible-moduli/#comment-238186 Tao])
|
|
| An in principle refinement of the van der Corput estimate based on exploiting additional averaging
|}


Legend:
# ? - unconfirmed or conditional
# ?? - theoretical limit of an analysis, rather than a claimed record
# <nowiki>*</nowiki> - is majorized by an earlier but independent result
# strikethrough - values relied on a computation that has now been retracted

See also the article on ''[[Finding narrow admissible tuples]]'' for benchmark values of <math>H</math> for various key values of <math>k_0</math>.

== Polymath threads ==

# [http://sbseminar.wordpress.com/2013/05/30/i-just-cant-resist-there-are-infinitely-many-pairs-of-primes-at-most-59470640-apart I just can’t resist: there are infinitely many pairs of primes at most 59470640 apart], Scott Morrison, 30 May 2013. <I>Inactive</I>
# [http://terrytao.wordpress.com/2013/06/03/the-prime-tuples-conjecture-sieve-theory-and-the-work-of-goldston-pintz-yildirim-motohashi-pintz-and-zhang/ The prime tuples conjecture, sieve theory, and the work of Goldston-Pintz-Yildirim, Motohashi-Pintz, and Zhang], Terence Tao, 3 June 2013. <I>Inactive</I>
# [http://polymathprojects.org/2013/06/04/polymath-proposal-bounded-gaps-between-primes/ Polymath proposal: bounded gaps between primes], Terence Tao, 4 June 2013. <B>Active</B>
# [http://terrytao.wordpress.com/2013/06/04/online-reading-seminar-for-zhangs-bounded-gaps-between-primes/ Online reading seminar for Zhang’s “bounded gaps between primes”], Terence Tao, 4 June 2013. <I>Inactive</I>
# [http://sbseminar.wordpress.com/2013/06/05/more-narrow-admissible-sets/ More narrow admissible sets], Scott Morrison, 5 June 2013.  <I>Inactive</I>
# [http://terrytao.wordpress.com/2013/06/08/the-elementary-selberg-sieve-and-bounded-prime-gaps/ The elementary Selberg sieve and bounded prime gaps], Terence Tao, 8 June 2013. <I>Inactive</I>
# [http://terrytao.wordpress.com/2013/06/10/a-combinatorial-subset-sum-problem-associated-with-bounded-prime-gaps/ A combinatorial subset sum problem associated with bounded prime gaps], Terence Tao, 10 June 2013. <I>Inactive</I>
# [http://terrytao.wordpress.com/2013/06/11/further-analysis-of-the-truncated-gpy-sieve/ Further analysis of the truncated GPY sieve], Terence Tao, 11 June 2013. <I>Inactive</I>
# [http://terrytao.wordpress.com/2013/06/12/estimation-of-the-type-i-and-type-ii-sums/ Estimation of the Type I and Type II sums], Terence Tao, 12 June 2013. <I>Inactive</I>
# [http://terrytao.wordpress.com/2013/06/14/estimation-of-the-type-iii-sums/ Estimation of the Type III sums], Terence Tao, 14 June 2013.  <I>Inactive</I>
# [http://terrytao.wordpress.com/2013/06/18/a-truncated-elementary-selberg-sieve-of-pintz/ A truncated elementary Selberg sieve of Pintz], Terence Tao, 18 June, 2013. <I>Inactive</I>
# [http://terrytao.wordpress.com/2013/06/22/bounding-short-exponential-sums-on-smooth-moduli-via-weyl-differencing/ Bounding short exponential sums on smooth moduli via Weyl differencing], Terence Tao, 22 June, 2013. <I>Inactive</I>
# [http://terrytao.wordpress.com/2013/06/23/the-distribution-of-primes-in-densely-divisible-moduli/ The distribution of primes in densely divisible moduli], Terence Tao, 23 June, 2013.  <I>Inactive</I>
# [http://terrytao.wordpress.com/2013/06/30/bounded-gaps-between-primes-polymath8-a-progress-report/ Bounded gaps between primes (Polymath8) – a progress report], Terence Tao, 30 June 2013. <B>Active</B>
# [http://sbseminar.wordpress.com/2013/07/02/the-quest-for-narrow-admissible-tuples/ The quest for narrow admissible tuples], Andrew Sutherland, 2 July 2013. <B>Active</B>
# [http://terrytao.wordpress.com/2013/07/07/the-distribution-of-primes-in-doubly-densely-divisible-moduli/ The distribution of primes in doubly densely divisible moduli], Terence Tao, 7 July 2013. <B>Active</B>.

== Code and data ==

* [https://github.com/semorrison/polymath8 Hensely-Richards sequences], Scott Morrison
** [http://tqft.net/misc/finding%20k_0.nb A mathematica notebook for finding k_0], Scott Morrison
** [https://github.com/avi-levy/dhl python implementation], Avi Levy
* [http://www.opertech.com/primes/k-tuples.html k-tuple pattern data], Thomas J Engelsma
** [https://perswww.kuleuven.be/~u0040935/k0graph.png A graph of this data]
** [http://www.opertech.com/primes/webdata/ Tuples giving this data]
* [https://github.com/vit-tucek/admissible_sets Sifted sequences], Vit Tucek
* [http://sbseminar.wordpress.com/2013/05/30/i-just-cant-resist-there-are-infinitely-many-pairs-of-primes-at-most-59470640-apart/#comment-23555 Other sifted sequences], Christian Elsholtz
* [http://www.ams.org/journals/mcom/2001-70-236/S0025-5718-01-01348-5/S0025-5718-01-01348-5.pdf Size of largest admissible tuples in intervals of length up to 1050], Clark and Jarvis
* [http://math.mit.edu/~drew/admissable_v0.1.tar C implementation of the "greedy-greedy" algorithm], Andrew Sutherland
* [https://www.dropbox.com/sh/jjxi0jmcskx1xcz/iBBVwZTj-x Dropbox for sequences], pedant
* [https://docs.google.com/spreadsheet/ccc?key=0Ao3urQ79oleSdEZhRS00X1FLQjM3UlJTZFRqd19ySGc&usp=sharing Spreadsheet for admissible sequences], Vit Tucek
* [http://www.cs.cmu.edu/~xfxie/project/admissible/admissibleV1.1.zip Java code for optimising a given tuple V1.1], xfxie

== Errata ==

Page numbers refer to the file linked to for the relevant paper.

# Errata for Zhang's "[http://annals.math.princeton.edu/wp-content/uploads/YitangZhang.pdf Bounded gaps between primes]"
## Page 5: In the first display, <math>\mathcal{E}</math> should be multiplied by <math>\mathcal{L}^{2k_0+2l_0}</math>, because <math>\lambda(n)^2</math> in (2.2) can be that large, cf. (2.4).
## Page 14: In the final display, the constraint <math>(n,d_1=1</math> should be <math>(n,d_1)=1</math>.
## Page 35: In the display after (10.5), the subscript on <math>{\mathcal J}_i</math> should be deleted.
## Page 36: In the third display, a factor of <math>\tau(q_0r)^{O(1)}</math> may be needed on the right-hand side (but is ultimately harmless).
## Page 38: In the display after (10.14), <math>\xi(r,a;q_1,b_1;q_2,b_2;n,k)</math> should be <math>\xi(r,a;k;q_1,b_1;q_2,b_2;n)</math>.
## Page 42: In (12.3), <math>B</math> should probably be 2.
## Page 47: In the third display after (13.13), the condition <math>l \in {\mathcal I}_i(h)</math> should be <math>l \in {\mathcal I}_i(sh)</math>.
## Page 49: In the top line, a comma in <math>(h_1,h_2;,n_1,n_2)</math> should be deleted.
## Page 51: In the penultimate display, one of the two consecutive commas should be deleted.
## Page 54: Three displays before (14.17), <math>\bar{r_2}(m_1+m_2)q</math> should be <math>\bar{r_2}(m_1+m_2)/q</math>.
# Errata for Motohashi-Pintz's "[http://arxiv.org/pdf/math/0602599v1.pdf A smoothed GPY sieve]" 
## Page 31: The estimation of (5.14) by (5.15) does not appear to be justified.  In the text, it is claimed that the second summation in (5.14) can be treated by a variant of (4.15); however, whereas (5.14) contains a factor of <math>(\log \frac{R}{|D|})^{2\ell+1}</math>, (4.15) contains instead a factor of <math>(\log \frac{R/w}{|K|})^{2\ell+1}</math> which is significantly smaller (K in (4.15) plays a similar role to D in (5.14)).  As such, the crucial gain of <math>\exp(-k\omega/3)</math> in (4.15) does not seem to be available for estimating the second sum in (5.14).
# Errata for Pintz's "[http://arxiv.org/pdf/1306.1497v1.pdf A note on bounded gaps between primes]", version 1.  Update: the errata below have been corrected in subsequent versions of Pintz's paper.
## Page 7: In (2.39), the exponent of <math>3a/2</math> should instead be <math>-5a/2</math> (it comes from dividing (2.38) by (2.37)).  This impacts the numerics for the rest of the paper.
## Page 8: The "easy calculation" that the relative error caused by discarding all but the smooth moduli appears to be unjustified, as it relies on the treatment of (5.14) in Motohashi-Pintz which has the issue pointed out in 2.1 above.

== Other relevant blog posts ==

* [http://terrytao.wordpress.com/2008/11/19/marker-lecture-iii-small-gaps-between-primes/ Marker lecture III: “Small gaps between primes”], Terence Tao, 19 Nov 2008.
* [http://blogs.ethz.ch/kowalski/2009/01/22/the-goldston-pintz-yildirim-result-and-how-far-do-we-have-to-walk-to-twin-primes/ The Goldston-Pintz-Yildirim result, and how far do we have to walk to twin primes ?], Emmanuel Kowalski, 22 Jan 2009.
* [http://www.math.columbia.edu/~woit/wordpress/?p=5865 Number Theory News], Peter Woit, 12 May 2013.
* [http://golem.ph.utexas.edu/category/2013/05/bounded_gaps_between_primes.html Bounded Gaps Between Primes], Emily Riehl, 14 May 2013.
* [http://blogs.ethz.ch/kowalski/2013/05/21/bounded-gaps-between-primes/ Bounded gaps between primes!], Emmanuel Kowalski, 21 May 2013.
* [http://blogs.ethz.ch/kowalski/2013/06/04/bounded-gaps-between-primes-some-grittier-details/ Bounded gaps between primes: some grittier details], Emmanuel Kowalski, 4 June 2013.
** [http://www.math.ethz.ch/~kowalski/zhang-notes.pdf The slides from the talk mentioned in that post]
* [http://aperiodical.com/2013/06/bound-on-prime-gaps-bound-decreasing-by-leaps-and-bounds/ Bound on prime gaps bound decreasing by leaps and bounds], Christian Perfect, 8 June 2013.
* [http://blogs.ams.org/blogonmathblogs/2013/06/14/narrowing-the-gap/ Narrowing the Gap], Brie Finegold, AMS Blog on Math Blogs, 14 June 2013.
* [http://blogs.ethz.ch/kowalski/2013/06/22/bounded-gaps-between-primes-the-dawn-of-some-enlightenment/ Bounded gaps between primes: the dawn of (some) enlightenment], Emmanuel Kowalski, 22 June 2013.
* [http://blogs.ethz.ch/kowalski/2013/06/25/a-ternary-divisor-variation/ A ternary divisor variation], Emmanuel Kowalski, 25 June 2013.

== MathOverflow ==

* [http://mathoverflow.net/questions/131185/philosophy-behind-yitang-zhangs-work-on-the-twin-primes-conjecture Philosophy behind Yitang Zhang’s work on the Twin Primes Conjecture], 20 May 2013.
* [http://mathoverflow.net/questions/131825/a-technical-question-related-to-zhangs-result-of-bounded-prime-gaps A technical question related to Zhang’s result of bounded prime gaps], 25 May 2013.
* [http://mathoverflow.net/questions/132452/how-does-yitang-zhang-use-cauchys-inequality-and-theorem-2-to-obtain-the-error How does Yitang Zhang use Cauchy’s inequality and Theorem 2 to obtain the error term coming from the <math>S_2</math> sum], 31 May 2013. 
* [http://mathoverflow.net/questions/132632/tightening-zhangs-bound-closed Tightening Zhang’s bound], 3 June 2013.
** [http://meta.mathoverflow.net/discussion/1605/tightening-zhangs-bound/ Metathread for this post]
* [http://mathoverflow.net/questions/132731/does-zhangs-theorem-generalize-to-3-or-more-primes-in-an-interval-of-fixed-len Does Zhang’s theorem generalize to 3 or more primes in an interval of fixed length?], 3 June 2013.

== Wikipedia and other references ==

* [http://en.wikipedia.org/wiki/Bessel_function Bessel function]
* [http://en.wikipedia.org/wiki/Bombieri-Vinogradov_theorem Bombieri-Vinogradov theorem]
* [http://en.wikipedia.org/wiki/Brun%E2%80%93Titchmarsh_theorem Brun-Titchmarsh theorem]
* [http://www.encyclopediaofmath.org/index.php/Dispersion_method Dispersion method]
* [http://en.wikipedia.org/wiki/Prime_gap Prime gap]
* [http://en.wikipedia.org/wiki/Second_Hardy%E2%80%93Littlewood_conjecture Second Hardy-Littlewood conjecture]
* [http://en.wikipedia.org/wiki/Twin_prime_conjecture Twin prime conjecture]

== Recent papers and notes ==

* [http://arxiv.org/abs/1304.3199 On the exponent of distribution of the ternary divisor function], Étienne Fouvry, Emmanuel Kowalski, Philippe Michel, 11 Apr 2013.
* [http://www.renyi.hu/~revesz/ThreeCorr0grey.pdf On the optimal weight function in the Goldston-Pintz-Yildirim method for finding small gaps between consecutive primes], Bálint Farkas, János Pintz and Szilárd Gy. Révész, To appear in: Paul Turán Memorial Volume: Number Theory, Analysis and Combinatorics, de Gruyter, Berlin, 2013. 23 pages. [http://arxiv.org/abs/1306.2133 arXiv]
* [http://annals.math.princeton.edu/wp-content/uploads/YitangZhang.pdf Bounded gaps between primes], Yitang Zhang, to appear, Annals of Mathematics.  Released 21 May, 2013.
* [http://arxiv.org/abs/1305.6289 Polignac Numbers, Conjectures of Erdös on Gaps between Primes, Arithmetic Progressions in Primes, and the Bounded Gap Conjecture], Janos Pintz, 27 May 2013.
* [http://arxiv.org/abs/1305.6369 A poor man's improvement on Zhang's result: there are infinitely many prime gaps less than 60 million], T. S. Trudgian, 28 May 2013.
* [http://www.math.ethz.ch/~kowalski/friedlander-iwaniec-sum.pdf The Friedlander-Iwaniec sum], É. Fouvry, E. Kowalski, Ph. Michel., May 2013.
* [http://terrytao.files.wordpress.com/2013/06/bounds.pdf Notes on Zhang's prime gaps paper], Terence Tao, 1 June 2013.
* [http://arxiv.org/abs/1306.0511 Bounded prime gaps in short intervals], Johan Andersson, 3 June 2013.
* [http://arxiv.org/abs/1306.0948 Bounded length intervals containing two primes and an almost-prime II], James Maynard, 5 June 2013.
* [http://arxiv.org/abs/1306.1497 A note on bounded gaps between primes], Janos Pintz, 6 June 2013.
* [https://sites.google.com/site/avishaytal/files/Primes.pdf Lower Bounds for Admissible k-tuples], Avishay Tal, 15 June 2013.
* Notes in a truncated elementary Selberg sieve ([http://terrytao.files.wordpress.com/2013/06/file-1.pdf Section 1], [http://terrytao.files.wordpress.com/2013/06/file-2.pdf Section 2], [http://terrytao.files.wordpress.com/2013/06/file-3.pdf Section 3]), Janos Pintz, 18 June 2013.

== Media ==

* [http://www.nature.com/news/first-proof-that-infinitely-many-prime-numbers-come-in-pairs-1.12989 First proof that infinitely many prime numbers come in pairs], Maggie McKee, Nature, 14 May 2013.
* [http://www.newscientist.com/article/dn23535-proof-that-an-infinite-number-of-primes-are-paired.html Proof that an infinite number of primes are paired], Lisa Grossman, New Scientist, 14 May 2013.
* [https://www.simonsfoundation.org/features/science-news/unheralded-mathematician-bridges-the-prime-gap/ Unheralded Mathematician Bridges the Prime Gap], Erica Klarreich, Simons science news, 20 May 2013.  
** The article also appeared on Wired as "[http://www.wired.com/wiredscience/2013/05/twin-primes/ Unknown Mathematician Proves Elusive Property of Prime Numbers]".
* [http://www.slate.com/articles/health_and_science/do_the_math/2013/05/yitang_zhang_twin_primes_conjecture_a_huge_discovery_about_prime_numbers.html The Beauty of Bounded Gaps], Jordan Ellenberg, Slate, 22 May 2013.
* [http://www.newscientist.com/article/dn23644 Game of proofs boosts prime pair result by millions], Jacob Aron, New Scientist, 4 June 2013.
* [http://blogs.discovermagazine.com/crux/2013/07/10/primal-madness-mathematicians-hunt-for-twin-prime-numbers/ Primal Madness: Mathematicians’ Hunt for Twin Prime Numbers], Amir Aczel, Discover Magazine, 10 July, 2013.

== Bibliography ==

Additional links for some of these references (e.g. to arXiv versions) would be greatly appreciated.

* [BFI1986] Bombieri, E.; Friedlander, J. B.; Iwaniec, H. Primes in arithmetic progressions to large moduli. Acta Math. 156 (1986), no. 3-4, 203–251. [http://www.ams.org/mathscinet-getitem?mr=834613 MathSciNet] [http://link.springer.com/article/10.1007%2FBF02399204 Article]
* [BFI1987] Bombieri, E.; Friedlander, J. B.; Iwaniec, H. Primes in arithmetic progressions to large moduli. II. Math. Ann. 277 (1987), no. 3, 361–393. [http://www.ams.org/mathscinet-getitem?mr=891581 MathSciNet] [https://eudml.org/doc/164255 Article]
* [BFI1989] Bombieri, E.; Friedlander, J. B.; Iwaniec, H. Primes in arithmetic progressions to large moduli. III. J. Amer. Math. Soc. 2 (1989), no. 2, 215–224. [http://www.ams.org/mathscinet-getitem?mr=976723 MathSciNet] [http://www.ams.org/journals/jams/1989-02-02/S0894-0347-1989-0976723-6/ Article]
* [B1995] Jörg Brüdern, Einführung in die analytische Zahlentheorie, Springer Verlag 1995
* [CJ2001] Clark, David A.; Jarvis, Norman C.; Dense admissible sequences. Math. Comp. 70 (2001), no. 236, 1713–1718 [http://www.ams.org/mathscinet-getitem?mr=1836929 MathSciNet] [http://www.ams.org/journals/mcom/2001-70-236/S0025-5718-01-01348-5/home.html Article]
* [FI1981] Fouvry, E.; Iwaniec, H. On a theorem of Bombieri-Vinogradov type., Mathematika 27 (1980), no. 2, 135–152 (1981). [http://www.ams.org/mathscinet-getitem?mr=610700 MathSciNet] [http://www.math.ethz.ch/~kowalski/fouvry-iwaniec-on-a-theorem.pdf Article] 
* [FI1983] Fouvry, E.; Iwaniec, H. Primes in arithmetic progressions. Acta Arith. 42 (1983), no. 2, 197–218. [http://www.ams.org/mathscinet-getitem?mr=719249 MathSciNet] [http://matwbn.icm.edu.pl/ksiazki/aa/aa42/aa4226.pdf Article]
* [FI1985] Friedlander, John B.; Iwaniec, Henryk, Incomplete Kloosterman sums and a divisor problem.  With an appendix by Bryan J. Birch and Enrico Bombieri. Ann. of Math. (2) 121 (1985), no. 2, 319–350. [http://www.ams.org/mathscinet-getitem?mr=786351 MathSciNet] [http://www.jstor.org/stable/1971175 JSTOR] [http://www.jstor.org/stable/1971176 Appendix]
* [GPY2009] Goldston, Daniel A.; Pintz, János; Yıldırım, Cem Y. Primes in tuples. I. Ann. of Math. (2) 170 (2009), no. 2, 819–862.  [http://arxiv.org/abs/math/0508185 arXiv] [http://www.ams.org/mathscinet-getitem?mr=2552109 MathSciNet]
* [GR1998] Gordon, Daniel M.; Rodemich, Gene Dense admissible sets. Algorithmic number theory (Portland, OR, 1998), 216–225, Lecture Notes in Comput. Sci., 1423, Springer, Berlin, 1998. [http://www.ams.org/mathscinet-getitem?mr=1726073 MathSciNet] [http://www.ccrwest.org/gordon/ants.pdf Article]
* [GR1980] S. W. Graham, C. J. Ringrose, Lower bounds for least quadratic nonresidues. Analytic number theory (Allerton Park, IL, 1989), 269–309, Progr. Math., 85, Birkhäuser Boston, Boston, MA, 1990. [http://www.ams.org/mathscinet-getitem?mr=1084186 MathSciNet] [http://link.springer.com/content/pdf/10.1007%2F978-1-4612-3464-7_18.pdf Article]
* [HB1978] D. R. Heath-Brown, Hybrid bounds for Dirichlet L-functions. Invent. Math. 47 (1978), no. 2, 149–170. [http://www.ams.org/mathscinet-getitem?mr=485727 MathSciNet] [http://link.springer.com/article/10.1007%2FBF01578069 Article]
* [HB1986] D. R. Heath-Brown, The divisor function d3(n) in arithmetic progressions.  Acta Arith. 47 (1986), no. 1, 29–56. [http://www.ams.org/mathscinet-getitem?mr=866901 MathSciNet] [http://matwbn.icm.edu.pl/ksiazki/aa/aa47/aa4713.pdf Article]
* [HR1973] Hensley, Douglas; Richards, Ian, On the incompatibility of two conjectures concerning primes. Analytic number theory (Proc. Sympos. Pure Math., Vol. XXIV, St. Louis Univ., St. Louis, Mo., 1972), pp. 123–127. Amer. Math. Soc., Providence, R.I., 1973. [http://www.ams.org/mathscinet-getitem?mr=340194 MathSciNet] [http://www.ams.org/journals/bull/1974-80-03/S0002-9904-1974-13434-8/S0002-9904-1974-13434-8.pdf Article]
* [HR1973b] Hensley, Douglas; Richards, Ian, Primes in intervals.  Acta Arith. 25 (1973/74), 375–391. [http://www.ams.org/mathscinet-getitem?mr=396440 MathSciNet] [https://eudml.org/doc/205282 Article]
* [MP2008] Motohashi, Yoichi; Pintz, János A smoothed GPY sieve. Bull. Lond. Math. Soc. 40 (2008), no. 2, 298–310.  [http://arxiv.org/abs/math/0602599 arXiv] [http://www.ams.org/mathscinet-getitem?mr=2414788 MathSciNet] [http://blms.oxfordjournals.org/content/40/2/298 Article]
* [MV1973] Montgomery, H. L.; Vaughan, R. C. The large sieve. Mathematika 20 (1973), 119–134. [http://www.ams.org/mathscinet-getitem?mr=374060 MathSciNet] [http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=6718308 Article]
* [M1978] Hugh L. Montgomery, The analytic principle of the large sieve. Bull. Amer. Math. Soc. 84 (1978), no. 4, 547–567. [http://www.ams.org/mathscinet-getitem?mr=466048 MathSciNet] [http://projecteuclid.org/DPubS?service=UI&version=1.0&verb=Display&handle=euclid.bams/1183540922 Article]
* [R1974] Richards, Ian On the incompatibility of two conjectures concerning primes; a discussion of the use of computers in attacking a theoretical problem. Bull. Amer. Math. Soc. 80 (1974), 419–438.  [http://www.ams.org/mathscinet-getitem?mr=337832 MathSciNet] [http://www.ams.org/journals/bull/1974-80-03/S0002-9904-1974-13434-8/home.html Article]
* [S1961] Schinzel, A. Remarks on the paper "Sur certaines hypothèses concernant les nombres premiers". Acta Arith. 7 1961/1962 1–8. [http://www.ams.org/mathscinet-getitem?mr=130203 MathSciNet] [http://matwbn.icm.edu.pl/ksiazki/aa/aa7/aa711.pdf Article]
* [S2007] K. Soundararajan, Small gaps between prime numbers: the work of Goldston-Pintz-Yıldırım. Bull. Amer. Math. Soc. (N.S.) 44 (2007), no. 1, 1–18. [http://www.ams.org/mathscinet-getitem?mr=2265008 MathSciNet] [http://www.ams.org/journals/bull/2007-44-01/S0273-0979-06-01142-6/ Article] [http://arxiv.org/abs/math/0605696 arXiv]