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:





MnDetails
81419207
Tested as composite (unverified): unconfirmed Lucas-Lehmer test says not-prime
No factors below 276
TF target 275
Assignments
AssignedUserWork TypeStage% DoneUpdatedEst CompleteExpired
2026-06-29ArgentiumDLL97.78 %2026-08-092026-08-09
P-1
B1 = 690000
B2 = 14145000
LL
StatusDateUserResidueShiftSoftware
Unverified2017-07-06Teal Dulcet98D115E53DCCCF__58024262CUDALucas v2.06beta
History
DateUserTypeResult
2020-06-05-anonymous-NFno factor TF: 75-76
2017-07-06Teal DulcetC-LL98D115E53DCCCF__
2017-06-07S485122NF-PM1B1=690000, B2=14145000, E=12
2016-11-06TheJudgerNFno factor TF: 74-75
2016-11-06TheJudgerNFno factor TF: 73-74
2016-10-091997rj7NFno factor TF: 72-73
2013-07-12La GüiraNFno factor TF: 71-72
2013-07-12La GüiraNFno factor TF: 70-71
2013-06-20ebravickNFno factor TF: 69-70
2013-06-14ebravickNFno factor TF: 68-69
2013-06-10ebravickNFno factor TF: 67-68
2013-01-30phoenicisNFno factor TF: 66-67
2012-08-13Carsten KossendeyNFno factor TF: 65-66
2010-12-02Architects CubedNFno factor TF: 64-65