mersenneforum.org Prime Gap News
 Register FAQ Search Today's Posts Mark Forums Read

 2021-01-02, 12:56 #210 SethTro     "Seth" Apr 2019 3×89 Posts Thanks D.Stevens for turned in a big batch of multiples of 6199# and 9973# This moves him/you into the top 10 contributors! I personally enjoyed seeing "129008 32479#/2310 - 128966" (merit=4) replaced by "421733*9973#/208110-65834" (merit=13) and "145542 10^19655-31389 (PDeGeest)" (merit=3.2) replaced by "1143911*9973#/208110-98744" (merit=14.7) as well as a few other low merit records (there seem to only be ~100 in the DB under <160,000) I'm going to add you to the trusted list which means it won't take 48 hours to verify your next batch of submissions :) Attached Thumbnails
2021-01-02, 13:20   #211
henryzz
Just call me Henry

"David"
Sep 2007
Cambridge (GMT/BST)

3·1,951 Posts

Quote:
 Originally Posted by SethTro I'm going to add you to the trusted list which means it won't take 48 hours to verify your next batch of submissions :)
What does that change? It is still worth double-checking the gaps to some extent. At least the endpoints. Why do some of the commits have failed checks? I assume these have been sorted,

I added a few to the low merit list. Still haven't found that elusive 1M gap. 969864 was close.

2021-01-02, 13:40   #212
SethTro

"Seth"
Apr 2019

3×89 Posts

Quote:
 Originally Posted by henryzz What does that change? It is still worth double-checking the gaps to some extent. At least the endpoints. Why do some of the commits have failed checks? I assume these have been sorted, I added a few to the low merit list. Still haven't found that elusive 1M gap. 969864 was close.
For gaps with merit < 22, that are expected to take more than 3 minutes to verify (endpoints + internal) I (READ: the primegaps server) verify both endpoints but only a portion of the interval composites. the amount verified and if it reclassifies them as "C??" depends arbitrarily on if you have submitted a lot of records before (and I think you should be "trusted")

2021-01-02, 13:52   #213
ATH
Einyen

Dec 2003
Denmark

57778 Posts

Quote:
 Originally Posted by SethTro I updated two tables on the lists site "Top 20 gaps by merit" is now "Top 20 largest gaps ordered by merit" https://primegap-list-project.github...gaps-by-merit/
I am not a part of this project, so I am not complaining just suggesting.

In my opinion it is confusing to sort the very largest gaps by merit, so you have to search the list and find the very largest gap at rank 4, and 2nd largest at the bottom at rank 20.

I think the list used to be called "Largest gaps with merit>10" or something like that and was sorted by gapsize.

EDIT: Nevermind, I just noticed that list still exists: https://primegap-list-project.github...merit-over-10/
(But I still do not understand the point of sorting the very largest gaps by merit).

Last fiddled with by ATH on 2021-01-02 at 13:54

2021-01-03, 06:16   #214
SethTro

"Seth"
Apr 2019

4138 Posts

Quote:
 Originally Posted by ATH I am not a part of this project, so I am not complaining just suggesting. In my opinion it is confusing to sort the very largest gaps by merit, so you have to search the list and find the very largest gap at rank 4, and 2nd largest at the bottom at rank 20. I think the list used to be called "Largest gaps with merit>10" or something like that and was sorted by gapsize. EDIT: Nevermind, I just noticed that list still exists: https://primegap-list-project.github...merit-over-10/ (But I still do not understand the point of sorting the very largest gaps by merit).
Thanks for the comment; I was focused on trying to understand what the list original had intended instead of asking "does this make sense?", So I changed it so there are four lists: top 20 with merit > 30, with merit > 20, with merit > 10, and overall top 20.

I changed the name so it's just top20 gaps by size now.

Last fiddled with by SethTro on 2021-01-03 at 06:16

 2021-01-13, 07:20 #215 SethTro     "Seth" Apr 2019 3·89 Posts New top 20 record The top 20 overall merits list has this new addition "974879377*2221#/4626930 -49418 to +28932". It's a gap of 78350 with merit 36.2822 the first large merit of 2021. I've spent significant effort on 2221#/4626930 evaluated ~500 million values from m=1 to 1,400,000,000. This is my best by >2 merit! Overall I've found 2002 records with an average merit of 24.5! The distribution of merit over ~432million entries looks like this 1 10405193 2 10961102 3 6918671 ... 10 297378 11 226169 12 170160 13 124756 ... 20 5984 21 3527 22 2029 23 1092 24 560 25 337 26 161 27 78 28 53 29 18 30 13 31 10 32 2 33 3 36 1
 2021-02-06, 17:32 #216 henryzz Just call me Henry     "David" Sep 2007 Cambridge (GMT/BST) 3·1,951 Posts I have just submitted a new batch of records including: 330132 27.904 43249 * 11987#/505915410 -116640 to +213492 This a new record watermark gap. There are no larger known gaps for smaller numbers. This has knocked two existing records off the list.
2021-02-07, 06:30   #217
robert44444uk

Jun 2003
Oxford, UK

111100011002 Posts

Quote:
 Originally Posted by henryzz I have just submitted a new batch of records including: 330132 27.904 43249 * 11987#/505915410 -116640 to +213492 This a new record watermark gap. There are no larger known gaps for smaller numbers. This has knocked two existing records off the list.
Nice!

 2021-02-07, 06:38 #218 robert44444uk     Jun 2003 Oxford, UK 22·3·7·23 Posts "No known gap larger with smaller start" https://primegap-list-project.github...gh-watermarks/ I'm not sure this list is correct - how can we have the middle of these - #135? Code: 134 N 9370 P119 = 3509710619*277#/5610 - 4098 34.2712 Dana Jacobsen 2018 135 N 9398 P126 = 3087143219*283#/30 - 4188 32.4299 Dana Jacobsen 2016 136 N 9738 P127 = 7850579863*283#/30 - 5534 33.4953 Dana Jacobsen 2016 And I think the list needs to be renamed: "No known larger gaps have greater merit" - I think this is what the list was trying to achieve.
2021-02-07, 08:57   #219
henryzz
Just call me Henry

"David"
Sep 2007
Cambridge (GMT/BST)

3·1,951 Posts

Quote:
 Originally Posted by robert44444uk "No known gap larger with smaller start" https://primegap-list-project.github...gh-watermarks/ I'm not sure this list is correct - how can we have the middle of these - #135? Code: 134 N 9370 P119 = 3509710619*277#/5610 - 4098 34.2712 Dana Jacobsen 2018 135 N 9398 P126 = 3087143219*283#/30 - 4188 32.4299 Dana Jacobsen 2016 136 N 9738 P127 = 7850579863*283#/30 - 5534 33.4953 Dana Jacobsen 2016 And I think the list needs to be renamed: "No known larger gaps have greater merit" - I think this is what the list was trying to achieve.
The list is based on gap size not merit. Merits can decrease as long as the gap size increases.

 2021-02-08, 06:04 #220 SethTro     "Seth" Apr 2019 3×89 Posts Robert uploaded practically 2000 records this week! We have found 4300 new records in 2021 more than 30% of the 13600 we found in 2020! I added a small frame showing the most of these improvements. Attached Thumbnails

 Similar Threads Thread Thread Starter Forum Replies Last Post gd_barnes Conjectures 'R Us 299 2021-02-19 09:30 gd_barnes No Prime Left Behind 251 2021-02-15 03:00 willmore Computer Science & Computational Number Theory 48 2010-09-19 08:30 NBtarheel_33 Hardware 17 2009-05-04 15:52 MoZ Factoring 6 2006-02-28 12:02

All times are UTC. The time now is 14:13.

Mon Apr 12 14:13:06 UTC 2021 up 4 days, 8:53, 1 user, load averages: 2.16, 2.06, 1.98