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
73972697Tested as composite (unverified): unconfirmed Lucas-Lehmer test says not-prime
TF
No factors below 275
TF target 274
P-1
B1 = 685000
B2 = 14213750
LL
StatusDateUserResidueShift
Unverified2017-07-12Ruediger Eckhard1FDC64B5AA6230__32980984
Assigned
AssignedUserWork TypeStage% DoneUpdatedExpired
2024-06-26-Anonymous-LL double-checkLL98.80 % 2025-06-20
History
DateUserTypeResult
2024-05-08James HeinrichNF
no factor from 2^69 to 2^70
2017-07-12Ruediger EckhardC-LL
1FDC64B5AA6230__
2016-06-19Brian BeuningNF
no factor from 2^74 to 2^75
2016-04-02Mark RoseNF
no factor from 2^57 to 2^64
2015-10-19TheJudgerNF-PM1
B1=685000, B2=14213750, E=12
2015-10-13ChuckNF
no factor from 2^73 to 2^74
2015-10-05Judge HaleNF
no factor from 2^72 to 2^73
2015-05-17srow7NF
no factor from 2^71 to 2^72
2013-08-05RobishNF
no factor from 2^70 to 2^71
2012-10-16lindedNF
no factor from 2^69 to 2^70
2010-08-24Lord_DragonNF
no factor from 2^68 to 2^69
2010-08-20Lord_DragonNF
no factor from 2^67 to 2^68
2010-08-14sannerud.comNF
no factor from 2^66 to 2^67
2010-08-14-Anonymous-NF
no factor from 2^65 to 2^66
2010-06-15Eidan SpiegelNF
no factor from 2^64 to 2^65