Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
2551421No factors below 269
P-1
B1=3 200 000
B2=112 000 000
LL
StatusDateUserResidueShift
VerifiedWayne Yeung135C0C2B7EE1AB500
Verified1999-04-13Louis Towles135C0C2B7EE1AB501060688
Verified2018-06-12kkmrkkblmbrbk135C0C2B7EE1AB50964566
Assigned
AssignedUserWork TypeStage% DoneUpdatedExpired
2021-02-16-Anonymous-factor ECM small0.0 % 2021-02-162021-04-17
2020-11-03-Anonymous-factor ECM small0.0 % 2020-11-032021-01-02
History
DateUserTypeResult
2021-06-03TJAOINFno factor from 2^68 to 2^69
2019-07-24TJAOINFno factor from 2^67 to 2^68
2018-06-12kkmrkkblmbrbkC-LL135C0C2B7EE1AB50
2017-08-10Gordon SpenceNFno factor from 2^66 to 2^67
2016-03-18mikrNF-PM1B1=3200000, B2=112000000, E=12
2016-02-23Mark RoseNFno factor from 2^59 to 2^60
2015-11-02omylistNFno factor from 2^65 to 2^66
2015-02-23VictordeHollanderNFno factor from 2^64 to 2^65
2015-02-23VictordeHollanderNFno factor from 2^63 to 2^64
2013-01-14dbaughNFno factor from 2^62 to 2^63
2012-06-16Sebastian HornbostelNFno factor from 2^61 to 2^62
2011-04-08James HeinrichNF-PM1B1=175000, B2=4068750, E=6
2011-01-09Jocelyn LaroucheNF-PM1B1=50000
2010-12-19Jocelyn LaroucheNF-PM1B1=20000
2009-02-01Sturle SundeNFno factor from 2^60 to 2^61
2003-11-08Team Prime RibNF-PM1B1=15000, B2=198750
2003-10-23-Anonymous-NF-PM1B1=2048, B2=204800
1999-04-13-Anonymous-C-LL135C0C2B7EE1AB50
1999-03-15-Anonymous-NFno factor to 2^59