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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MnStatusDetails
77443159Tested as composite (unverified): unconfirmed Lucas-Lehmer test says not-prime
TF
No factors below 275
TF target 274
P-1
B1 = 670000
B2 = 13232500
LL
StatusDateUserResidueShift
Unverified2017-07-25curtisc8F97CFC254B728__34802614
Assigned
AssignedUserWork TypeStage% DoneUpdatedExpired
2024-10-17ANONYMOUSLL double-checkLL64.56 % 2025-09-02
History
DateUserTypeResult
2017-07-25curtiscC-LL
8F97CFC254B728__
2016-04-04Mark RoseNF
no factor from 2^61 to 2^64
2016-03-18WileECoyoteNF-PM1
B1=670000, B2=13232500, E=6
2016-02-26AirSquirrelsNF
no factor from 2^74 to 2^75
2016-02-26AirSquirrelsNF
no factor from 2^73 to 2^74
2016-02-19BdotNF
no factor from 2^72 to 2^73
2015-12-09RichD0NF
no factor from 2^71 to 2^72
2013-01-03MomerathNF
no factor from 2^70 to 2^71
2010-10-16Peter KratochvilNF
no factor from 2^69 to 2^70
2010-10-11Peter KratochvilNF
no factor from 2^68 to 2^69
2010-10-09S00030NF
no factor from 2^67 to 2^68
2010-10-07S00030NF
no factor from 2^66 to 2^67
2010-10-06SAHS Tech DeptNF
no factor from 2^65 to 2^66
2010-10-03Marcello NuccioNF
no factor from 2^64 to 2^65