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
2825191No factors below 269
P-1
B1=5 000 000
B2=200 000 000
LL
StatusDateUserResidueShift
VerifiedRobert Clark4891A3DE1E9730C50
Verified1999-05-09Jeff Luebke4891A3DE1E9730C52012125
Verified2018-09-08kkmrkkblmbrbk4891A3DE1E9730C52305353
Assigned
AssignedUserWork TypeStage% DoneUpdatedExpired
2021-03-15-Anonymous-factor ECM small0.0 % 2021-03-152021-05-14
History
DateUserTypeResult
2021-05-13TJAOINFno factor from 2^68 to 2^69
2020-01-24masserNF-PM1B1=5000000, B2=200000000, E=12
2019-11-10masserNF-PM1B1=3000000, B2=30000000, E=12
2019-01-03chuenkitNFno factor from 2^67 to 2^68
2018-09-12Jocelyn LaroucheNF-PM1B1=656916, B2=2627664
2018-09-08kkmrkkblmbrbkC-LL4891A3DE1E9730C5
2018-09-05Jocelyn LaroucheNF-PM1B1=656916, B2=1313832
2018-09-03Jocelyn LaroucheNF-PM1B1=656916
2018-08-30Jocelyn LaroucheNF-PM1B1=602578
2017-10-28Gordon SpenceNFno factor from 2^66 to 2^67
2017-03-15Jocelyn LaroucheNF-PM1B1=328458, B2=3284580, E=6
2017-01-10Jocelyn LaroucheNF-PM1B1=228096
2016-12-19Jocelyn LaroucheNF-PM1B1=190080
2016-09-21Jocelyn LaroucheNF-PM1B1=132000, B2=3630000
2016-09-16Jocelyn LaroucheNF-PM1B1=132000, B2=3300000, E=6
2016-02-23Mark RoseNFno factor from 2^1 to 2^60
2016-02-13ramgeisNFno factor from 2^65 to 2^66
2015-04-21VictordeHollanderNFno factor from 2^64 to 2^65
2015-04-21VictordeHollanderNFno factor from 2^63 to 2^64
2013-01-10dbaughNFno factor from 2^62 to 2^63
2012-02-17markrNFno factor from 2^61 to 2^62
2009-02-14Sturle SundeNFno factor from 2^60 to 2^61
2003-11-28-Anonymous-NF-PM1B1=2048, B2=204800
1999-05-09-Anonymous-C-LL4891A3DE1E9730C5