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
75553609Tested as composite (unverified): unconfirmed Lucas-Lehmer test says not-prime
TF
No factors below 275
TF target 274
P-1
B1 = 745000
B2 = 16017500
LL
StatusDateUserResidueShift
Unverified2017-05-09andru90s240D09B61A47BE__16455111
Assigned
AssignedUserWork TypeStage% DoneUpdatedExpired
2024-10-02VladimirLL double-checkLL44.55 % 2025-08-24
History
DateUserTypeResult
2024-08-20ANONYMOUSNF
no factor from 2^72 to 2^73
2024-08-20ANONYMOUSNF
no factor from 2^71 to 2^72
2017-05-09andru90sC-LL
240D09B61A47BE__
2016-01-25AirSquirrelsNF
no factor from 2^74 to 2^75
2016-01-25AirSquirrelsNF
no factor from 2^73 to 2^74
2015-11-22TheJudgerNF-PM1
B1=745000, B2=16017500
2015-09-07Judge HaleNF
no factor from 2^72 to 2^73
2015-09-07Judge HaleNF
no factor from 2^71 to 2^72
2013-06-02ManpowreNF
no factor from 2^70 to 2^71
2010-09-27tscNF
no factor to 2^70
2010-07-31Gymnasium_RaublingNF
no factor from 2^65 to 2^66