PrimeGrid

Time 2021-09-04 07:36:01

Web Name: PrimeGrid

WebSite: http://www.primegrid.com

ID:193176

Keywords:

PrimeGrid,

Description:

1 "Prime Rank" is where the leading edge candidate, if prime, would appear in the Top 5000 Primes list. "5K+" means the primes are too small to make the list. 2 First "Available Tasks" number (A) is the number of tasks immediately available to send. 3 Second "Available Tasks" number (B) is additional candidates that have not yet been turned into workunits. If the first number (A) is 0, something is broken. If both numbers are 0, we've run out of work. 4 Underlined work is loaded manually. If the B number is not underlined, new candidates (B) are also automatically created from sieve files, which typically contain millions of candidates. If B is infinite ( ), there's essentially an unlimited amount of work available. 5 One or two tasks (A) are generated automatically from each candidate (B) when needed, so the total number of tasks available without manual intervention is either A+B or A+2*B. Normally two tasks are created for each candidate, however only 1 task is created if fast proof tasks are used, as designated by an "F" next to "CPU" or "GPU". 6 Includes all primes ever reported by PrimeGrid to Top 5000 Primes list. Many of these are no longer in the top 5000. F Uses fast proof tasks so no double check is necessary. Everyone is "first". MT Multithreading via web-based preferences is available. MT-A Multithreading via app_config.xml is available. PrimeGrid's primary goal is to advance mathematics by enabling everyday computer users to contribute their system's processing power towards prime finding. By simply downloading and installing BOINC and attaching to the PrimeGrid project, participants can choose from a variety of prime forms to search. With a little patience, you may find a large or even record breaking prime and enter into Chris Caldwell's The Largest Known Primes Database with a multi-million digit prime! PrimeGrid's secondary goal is to provide relevant educational materials about primes. Additionally, we wish to contribute to the field of mathematics. Lastly, primes play a central role in the cryptographic systems which are used for computer security. Through the study of prime numbers it can be shown how much processing is required to crack an encryption code and thus to determine whether current security schemes are sufficiently secure. PrimeGrid is currently running several sub-projects: 321 Prime Search: searching for mega primes of the form 3 2n±1. Cullen-Woodall Search: searching for mega primes of forms n 2n+1 and n 2n−1. Generalized Cullen-Woodall Search: searching for mega primes of forms n bn+1 and n bn−1 where n + 2 b. Extended Sierpinski Problem: helping solve the Extended Sierpinski Problem. Generalized Fermat Prime Search: searching for megaprimes of the form b2n+1. Prime Sierpinski Project: helping the Prime Sierpinski Project solve the Prime Sierpinski Problem. Proth Prime Search: searching for primes of the form k 2n+1. Fermat Divisor Search: a subset of the Proth Prime Search specificically searching for divisors of Fermat numbers. Seventeen or Bust: helping to solve the Sierpinski Problem. Sierpinski/Riesel Base 5: helping to solve the Sierpinski/Riesel Base 5 Problem. Sophie Germain Prime Search: searching for primes p and 2p+1. The Riesel problem: helping to solve the Riesel Problem. AP27 Search: searching for record length arithmetic progressions of primes. You can choose the projects you would like to run by going to the project preferences page.Recent Significant PrimesOn 1 March 2021, 02:47:51 UTC, PrimeGrid's Fermat Divisor Search found the Mega Prime25 28788628+1The prime is 2,645,643 digits long and enters Chris Caldwell's The Largest Known Primes Databaseranked 75th overall.The discovery was made by Tom Greer (tng) of the United States using an Authentic AMD Ryzen 9 5950X CPU @ 4.90GHz with 32GB RAM, running Microsoft Windows 10 Professional.This computer took about 2 hours and 46 minutes to complete the primality test using LLR2. Tom Greer is a member of the Antarctic Crunchers team.For more information, please see the Official Announcement.On 17 February 2021, 14:27:08 UTC, PrimeGrid's Fermat Divisor Search found the Mega Prime17 28636199+1The prime is 2,599,757 digits long and enters Chris Caldwell's The Largest Known Primes Databaseranked 76th overall.The discovery was made by Tom Greer (tng) of the United States using an Intel(R) Xeon(R) Gold 6140 CPU @ 2.30GHz with 1GB RAM, running Linux Ubuntu.This computer took about 5 hours to complete the primality test using LLR2. Tom Greer is a member of the Antarctic Crunchers team.For more information, please see the Official Announcement.On 7 February 2021, 18:01:10 UTC, PrimeGrid's The Riesel Problem project eliminated k=9221 by finding the Mega Prime9221 211392194-1The prime is 3,429,397 digits long and enters Chris Caldwell's The Largest Known Primes Databaseranked 44th overall. This is PrimeGrid's 17th elimination. 47 k's now remain.The discovery was made by Barry Schnur (BarryAZ) of the United States using an AMD Ryzen 5 2600 Six-Core Processor with 16GB RAM, running Microsoft Windows 10 Professional x64 Edition.This computer took about 2 days, 29 minutes to complete the primality test using LLR2. Barry Schnur is a member of the BOINC Synergy team.For more information, please see the Official Announcement.Other significant primes3 216819291-1 (321): official announcement | 3213 216408818+1 (321): official announcement | 3213 211895718-1 (321): official announcement | 3213 211731850-1 (321): official announcement | 3213 211484018-1 (321): official announcement | 32127 28342438-1 (27121): official announcement | 27121121 29584444+1 (27121): official announcement | 2712127 27046834+1 (27121): official announcement | 2712127 25213635+1 (27121): official announcement | 2712127 24583717-1 (27121): official announcement | 27121224584605939537911+81292139*23#*n for n=0..26 (AP27): official announcement48277590120607451+37835074*23#*n for n=0..25 (AP26): official announcement142099325379199423+16549135*23#*n for n=0..25 (AP26): official announcement149836681069944461+7725290*23#*n for n=0..25 (AP26): official announcement43142746595714191+23681770*23#*n for n=0..25 (AP26): official announcement6679881 26679881+1 (CUL): official announcement | Cullen6328548 26328548+1 (CUL): official announcement | Cullen99739 214019102+1 (ESP): official announcement | k=99739 eliminated193997 211452891+1 (ESP): official announcement | k=193997 eliminated161041 27107964+1 (ESP): official announcement | k=161041 eliminated147855!-1 (FPS): official announcement | Factorial110059!+1 (FPS): official announcement | Factorial103040!-1 (FPS): official announcement | Factorial94550!-1 (FPS): official announcement | Factorial27 27963247+1 (PPS-DIV): official announcement | Fermat Divisor13 25523860+1 (PPS-DIV): official announcement | Fermat Divisor193 23329782+1 (PPS-Mega): official announcement | Fermat Divisor57 22747499+1 (PPS): official announcement | Fermat Divisor267 22662090+1 (PPS): official announcement | Fermat Divisor2805222 252805222+1 (GC): official announcement | Generalized Cullen1806676 411806676+1 (GC): official announcement | Generalized Cullen1323365 1161323365+1 (GC): official announcement | Generalized Cullen1341174 531341174+1 (GC): official announcement | Generalized Cullen682156 79682156+1 (GC): official announcement | Generalized Cullen10590941048576+1 (GFN): official announcement | Generalized Fermat Prime9194441048576+1 (GFN): official announcement | Generalized Fermat Prime3638450524288+1 (GFN): official announcement | Generalized Fermat Prime3214654524288+1 (GFN): official announcement | Generalized Fermat Prime2985036524288+1 (GFN): official announcement | Generalized Fermat Prime563528 13563528-1 (GW): official announcement | Generalized Woodall404882 43404882-1 (GW): official announcement | Generalized Woodall1098133#-1 (PRS): official announcement | Primorial843301#-1 (PRS): official announcement | Primorial25 28788628+1 (PPS-DIV): official announcement | Top 100 Prime17 28636199+1 (PPS-DIV): official announcement | Top 100 Prime25 28456828+1 (PPS-DIV): official announcement | Top 100 Prime39 28413422+1 (PPS-DIV): official announcement | Top 100 Prime31 28348000+1 (PPS-DIV): official announcement | Top 100 Prime168451 219375200+1 (PSP): official announcement | k=168451 eliminated10223 231172165+1 (SoB): official announcement | k=10223 eliminated2996863034895 21290000 1 (SGS): official announcement | Twin2618163402417 21290000-1 (SGS), 2618163402417 21290001-1 (2p+1): official announcement | Sophie Germain18543637900515 2666667-1 (SGS), 18543637900515 2666668-1 (2p+1): official announcement | Sophie Germain3756801695685 2666669 1 (SGS): official announcement | Twin65516468355 2333333 1 (TPS): official announcement | Twin109838 53168862-1 (SR5): official announcement | k=109838 eliminated118568 53112069+1 (SR5): official announcement | k=118568 eliminated207494 53017502-1 (SR5): official announcement | k=207494 eliminated238694 52979422-1 (SR5): official announcement | k=238694 eliminated146264 52953282-1 (SR5): official announcement | k=146264 eliminated9221 211392194-1 (TRP): official announcement | k=9221 eliminated146561 211280802-1 (TRP): official announcement | k=146561 eliminated273809 28932416-1 (TRP): official announcement | k=273809 eliminated502573 27181987-1 (TRP): official announcement | k=502573 eliminated402539 27173024-1 (TRP): official announcement | k=402539 eliminated17016602 217016602-1 (WOO): official announcement | Woodall3752948 23752948-1 (WOO): official announcement | Woodall2367906 22367906-1 (WOO): official announcement | Woodall2013992 22013992-1 (WOO): official announcement | WoodallNews Once In A Blue Moon Challenge starts August 12 The sixth challenge of the 2021 Series will be a 10-day challenge leading up to a relatively rare astronomical event called a blue moon. The challenge will be offered on the PSP-LLR application, beginning 12 August 20:00 UTC and ending 22 August 20:00 UTC.To participate in the Challenge, please select only the Prime Sierpinski Problem LLR (PSP) project in your PrimeGrid preferences section.For more info, check out the forum thread for this challenge: https://www.primegrid.com/forum_thread.php?id=9720 nowrap=true#151032Best of luck! 10 Aug 2021 | 5:04:48 UTC 评论 World Emoji Day Challenge starts July 17th The fifth challenge of the 2021 Series will be a 3-day challenge in celebration of what is arguably the internet's most momentous and culturally significant holiday: World Emoji Day. The challenge will be offered on the GFN-17-Low subproject, beginning 17 July 22:00 UTC and ending 20 July 22:00 UTC.To participate in the Challenge, please select only the GFN-17-Low subproject in your PrimeGrid preferences section.For more info, check out the forum thread for this challenge: https://www.primegrid.com/forum_thread.php?id=9706 nowrap=true#150796Best of luck! 15 Jul 2021 | 5:23:34 UTC 评论 DIV Mega Prime! (Belated Posting) On 1 March 2021, 02:47:51 UTC, PrimeGrid's Fermat Divisor Search found the Mega Prime: 25*2^8788628+1The prime is 2,645,643 digits long and enters Chris Caldwell's “The Largest Known Primes Database” ranked 75th overall.The discovery was made by Tom Greer (tng) of the United States using an Authentic AMD Ryzen 9 5950X CPU @ 4.90GHz with 32GB RAM, running Microsoft Windows 10 Professional. This computer took about 2 hours and 46 minutes to complete the primality test using LLR2. Tom Greer is a member of the Antarctic Crunchers team.For more details, please see the official announcement. 1 Jul 2021 | 19:48:36 UTC 评论 PrimeGrid's 16th Birthday Challenge starts June 12 The fourth challenge of the 2021 Series will be a 5-day challenge celebrating the 16th anniversary of the launch of PrimeGrid on BOINC. The challenge will be offered on the ESP-LLR application, beginning 12 June 13:00 UTC and ending 17 June 13:00 UTC.To participate in the Challenge, please select only the Extended Sierpinski Problem LLR (ESP) project in your PrimeGrid preferences section.For more information, check out the forum thread for this challenge:https://www.primegrid.com/forum_thread.php?id=9684 nowrap=true#150570Best of luck! 9 Jun 2021 | 13:46:42 UTC 评论 Yuri's Night Challenge starts April 11th The third challenge of the 2021 Series will be a 3-day challenge celebrating the 60th anniversary of Yuri Gagarin's history-making venture into outer space. The challenge will be offered on the WW application, beginning 11 April 18:00 UTC and ending 14 April 18:00 UTC.This is a relatively new subproject here at PrimeGrid, and there are currently no known Wall–Sun–Sun primes! You could be the first to find one!To participate in the Challenge, please select only the Wieferich and Wall-Sun-Sun Prime Search (WW) project in your PrimeGrid preferences section.Questions? Queries? Quips? Discuss on the forum thread for this challenge. Best of luck! 8 Apr 2021 | 15:32:42 UTC 评论 ... more 新闻还可以通过 RSS 来获取Newly reported primes(Mega-primes are in bold.)6450660047445*2^1290000-1 (tng); 4333*2^1643858+1 (Menipe); 6450848492625*2^1290000-1 (YuW3-810); 6440925189345*2^1290000-1 (Beamington); 253265370^32768+1 (pyajve); 6449185042095*2^1290000-1 (tng); 6447889437267*2^1290000-1 (YuW3-810); 253177522^32768+1 (YuW3-810); 6447777680547*2^1290000-1 (YuW3-810); 9505*2^1643792+1 (Chooka); 6448438902825*2^1290000-1 (288larsson); 6447216122475*2^1290000-1 (Wabi CZ); 252614186^32768+1 (Penguin); 2525532*73^2525532+1 (tng); 252569408^32768+1 (Penguin); 252506814^32768+1 (Penguin); 132003152^65536+1 (sams88); 252442514^32768+1 (Penguin); 5811*2^3377016+1 (ext2097); 252319300^32768+1 (Ryan Dark)Top Crunchers:Top participants by RACScience United41535224.49tng35815584.45Grzegorz Roman Granowski31958461.02Tuna Ertemalp13783364valterc13231506.84Scott Brown13118128.28Nick9363064.46AlbertCZ9238629.23JGREAVES6308968.99Miklos M.5787648.57Top teams by RACAntarctic Crunchers51800933.15The Scottish Boinc Team44529709.55Czech National Team27937814.23Aggie The Pew23252512.06SETI.Germany20703039.16BOINC@AUSTRALIA16807958.56Microsoft13782873BOINC.Italy13750001Dutch Power Cows8602174.46SETI.USA8518304.77

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