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
4786657Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 265
P-1
B1 = 20125000
B2 = 244236872880
ECM
DigitsB1Curves
2550000167 / 280
Estimated T-Level: 23.0 ⓘ
LL
StatusDateUserResidueShift
VerifiedDavid A McGoughA8915E862A237F770
Verified2000-03-27Sam RobertsonA8915E862A237F772952394
History
DateUserTypeResult
2024-11-16TheJudgerNF
no factor from 2^72 to 2^73
2024-11-16TheJudgerNF
no factor from 2^71 to 2^72
2024-09-30Jason LynchNF-PM1
B1=20125000, B2=244236872880
2021-08-30LaurVNF-PM1
B1=8919937, B2=444974253
2021-08-23SRBaseNF
no factor from 2^70 to 2^71
2021-08-18SRBaseNF
no factor from 2^69 to 2^70
2021-03-22TJAOINF
no factor from 2^68 to 2^69
2018-09-22YxinityNF
no factor from 2^67 to 2^68
2017-11-18YxinityNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2016-02-23Mark RoseNF
no factor from 2^1 to 2^61
2015-07-16snme2pm1NF
no factor from 2^65 to 2^66
2015-01-11VictordeHollanderNF
no factor from 2^64 to 2^65
2015-01-11VictordeHollanderNF
no factor from 2^63 to 2^64
2013-12-03David CampeauNF-PM1
B1=420000, B2=10920000, E=12
2011-11-18GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-05-18markrNF
no factor from 2^61 to 2^62
2009-09-02Carsten KossendeyNF-PM1
B1=30000, B2=420000