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
80475191Tested as composite (unverified): unconfirmed Lucas-Lehmer test says not-prime
TF
No factors below 275
TF target 275
P-1
B1 = 675000
B2 = 13162500
LL
StatusDateUserResidueShift
Unverified2018-03-03ky0uraku84331D71D4E10B__28924868
Assigned
AssignedUserWork TypeStage% DoneUpdatedExpired
2025-05-08-Anonymous-LL double-check0.00 % 2025-05-08
History
DateUserTypeResult
2018-03-03ky0urakuC-LL
84331D71D4E10B__
2017-01-17PPed72NF-PM1
B1=675000, B2=13162500, E=6
2016-10-17dh1NF
no factor from 2^74 to 2^75
2016-10-16Judge HaleNF
no factor from 2^73 to 2^74
2016-05-10Judge HaleNF
no factor from 2^72 to 2^73
2016-05-10Judge HaleNF
no factor from 2^71 to 2^72
2013-06-11PEDNF
no factor from 2^70 to 2^71
2013-02-03rjbelansNF
no factor from 2^69 to 2^70
2013-01-29rjbelansNF
no factor from 2^68 to 2^69
2013-01-26phoenicisNF
no factor from 2^67 to 2^68
2011-07-03-Anonymous-NF
no factor from 2^66 to 2^67
2011-03-23ptcrNF
no factor from 2^65 to 2^66
2010-12-10Architects CubedNF
no factor from 2^64 to 2^65