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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Exponent Range:
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MnStatusDetails
1947269Factored57431622368499867552481
LL
StatusDateUserResidueShift
Verified (Factored)Mischa Kenn2C08429AC0E28BD00
Verified (Factored)1999-01-29T. Pace2C08429AC0E28BD01191479
Verified (Factored)2015-07-12MadPoo2C08429AC0E28BD01701571
PRP
StatusDateUserResidueShiftTypeBase
Verified (Factored)2020-09-10Kriesel5ECC7C3E83061CCB013
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2020-09-10MarkS5ECC7C3E83061CCB1123943853
Verified (Factored)2020-09-09Yuji Hasegawa5ECC7C3E83061CCB131157453
Assigned
AssignedUserWork TypeStage% DoneUpdatedExpired
2018-10-07Metalfactor ECM small0.0 % 2018-10-072019-04-05
History
DateUserTypeResult
2020-09-10KrieselC-PRP5ECC7C3E83061CCB
2020-09-10MarkSC-PRPM1947269/57431622368499867552481 : 5ECC7C3E83061CCB
2020-09-09Yuji HasegawaC-PRPM1947269/57431622368499867552481 : 5ECC7C3E83061CCB
2020-09-08noknoF-ECMFactor: 57431622368499867552481 / (ECM curve 6, B1=50000, B2=5000000)
2019-05-12chuenkitNFno factor from 2^67 to 2^68
2018-09-17Jocelyn LaroucheNF-PM1B1=1947269, B2=194726900, E=12
2018-02-28Jocelyn LaroucheNF-PM1B1=1947269, B2=113248640, E=12
2018-02-11Jocelyn LaroucheNF-PM1B1=1947269, B2=56624320, E=12
2018-02-05Jocelyn LaroucheNF-PM1B1=1947269, B2=28312160, E=12
2018-02-04Jocelyn LaroucheNF-PM1B1=1947269, B2=14156080, E=12
2017-09-22TJAOINFno factor from 2^66 to 2^67
2017-04-18Jocelyn LaroucheNF-PM1B1=1415608, B2=14156080, E=12
2017-01-03Jocelyn LaroucheNF-PM1B1=983062
2016-12-26Jocelyn LaroucheNF-PM1B1=819219
2016-12-17Jocelyn LaroucheNF-PM1B1=682683
2016-12-15Jocelyn LaroucheNF-PM1B1=568903
2016-02-23Mark RoseNFno factor from 2^58 to 2^60
2016-02-23Mark RoseNFno factor from 2^61 to 2^62
2016-02-23Mark RoseNFno factor from 2^62 to 2^63
2015-10-08Bruno VictalNF-PM1B1=500000, B2=15000000, E=12
2015-09-06ramgeisNFno factor from 2^65 to 2^66
2015-07-12MadPooC-LL2C08429AC0E28BD0
2015-04-28lycornNFno factor from 2^64 to 2^65
2015-04-28lycornNFno factor from 2^63 to 2^64
2011-12-14markrNF-PM1B1=275000, B2=6000000, E=12
2011-08-27GrunwalderGIMPNFno factor from 2^1 to 2^63
2010-01-22S485122NFno factor from 2^60 to 2^61
1999-01-29-Anonymous-C-LL2C08429AC0E28BD0
1998-12-21-Anonymous-NFno factor to 2^58