Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
83494273Tested as composite (unverified): unconfirmed Lucas-Lehmer test says not-prime
TF
No factors below 276
TF target 275
P-1
B1 = 665000
B2 = 12801250
LL
StatusDateUserResidueShift
Unverified2018-03-25ky0uraku258A70B4FBB41F__80131158
Assigned
AssignedUserWork TypeStage% DoneUpdatedExpired
2025-04-10-Anonymous-LL double-check0.00 % 2025-04-10
History
DateUserTypeResult
2018-03-25ky0urakuC-LL
258A70B4FBB41F__
2017-09-20Brian BeuningNF-PM1
B1=665000, B2=12801250, E=6
2017-03-10-Anonymous-NF
no factor from 2^75 to 2^76
2017-01-10Brian BeuningNF
no factor from 2^74 to 2^75
2017-01-10Brian BeuningNF
no factor from 2^73 to 2^74
2016-12-14Judge HaleNF
no factor from 2^72 to 2^73
2016-12-14Judge HaleNF
no factor from 2^71 to 2^72
2013-02-15DavinNF
no factor from 2^70 to 2^71
2013-02-15DavinNF
no factor from 2^69 to 2^70
2013-02-15DavinNF
no factor from 2^68 to 2^69
2013-02-15Juergen KampmeierNF
no factor from 2^67 to 2^68
2013-02-14saffaNF
no factor from 2^66 to 2^67
2012-08-06Carsten KossendeyNF
no factor from 2^65 to 2^66
2010-12-21Architects CubedNF
no factor from 2^64 to 2^65