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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
4437007Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 265
P-1
B1 = 19209000
B2 = 315992777100
ECM
DigitsB1Curves
2550000147 / 280
Estimated T-Level: 22.6 ⓘ
LL
StatusDateUserResidueShift
Verified1998-03-23Alan M. Evans7BCB38F0238388BF0
Verified1999-12-08Otto Bruggeman7BCB38F0238388BF3699332
History
DateUserTypeResult
2024-11-17TheJudgerNF
no factor from 2^72 to 2^73
2024-11-17TheJudgerNF
no factor from 2^71 to 2^72
2024-07-29Jason LynchNF-PM1
B1=19209000, B2=315992777100
2021-08-27axnNF-PM1
B1=10000000, B2=500000000
2021-08-10SRBaseNF
no factor from 2^70 to 2^71
2021-07-19axnNF
no factor from 2^69 to 2^70
2021-05-24TJAOINF
no factor from 2^68 to 2^69
2021-04-24Architects CubedNF-PM1
B1=222000, B2=13477000
2018-06-21ramgeisNF
no factor from 2^67 to 2^68
2018-05-17Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-06-23snme2pm1NF
no factor from 2^65 to 2^66
2014-09-13monstNF
no factor from 2^64 to 2^65
2014-09-03JayderNF
no factor from 2^63 to 2^64
2012-10-09Squeeky_SquirrelNF-PM1
B1=290000, B2=7395000, E=12
2012-01-19GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-10-18markrNF
no factor from 2^61 to 2^62
2009-07-26Carsten KossendeyNF-PM1
B1=25000, B2=356250