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
5194411Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 272
TF target 266
P-1
B1 = 4000000
B2 = 10285831710
ECM
DigitsB1Curves
2550000105 / 280
Estimated T-Level: 21.9 ⓘ
LL
StatusDateUserResidueShift
Verified1999-02-21Martin HockCCB6793DB6341EF50
Verified2000-10-15Marc Getty / Phil FizurCCB6793DB6341EF5391704
History
DateUserTypeResult
2024-09-30Andrew BNF
no factor from 2^71 to 2^72
2022-08-02Sid & AndyNF-PM1
B1=4000000, B2=10285831710
2022-02-02mikrNF
no factor from 2^70 to 2^71
2022-01-21Gordon SpenceNF
no factor from 2^69 to 2^70
2020-10-05TJAOINF
no factor from 2^68 to 2^69
2018-06-20ramgeisNF
no factor from 2^67 to 2^68
2018-02-15Squeeky_SquirrelNF-PM1
B1=310000, B2=9222500, E=12
2016-06-10Gordon SpenceNF
no factor from 2^66 to 2^67
2015-08-10snme2pm1NF
no factor from 2^65 to 2^66
2014-12-19VictordeHollanderNF
no factor from 2^64 to 2^65
2014-12-19VictordeHollanderNF
no factor from 2^63 to 2^64
2009-10-12USAFSSNF-PM1
B1=60000, B2=975000, E=6
2009-06-20GrunwalderGIMPNF
no factor from 2^62 to 2^63