Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

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MnDetails
83391977
Tested as composite (unverified): unconfirmed Lucas-Lehmer test says not-prime
No factors below 276
TF target 275
Assignments
AssignedUserWork TypeStage% DoneUpdatedEst CompleteExpired
2026-01-06-anonymous-D2026-01-062026-03-08
P-1
B1 = 665000
B2 = 12967500
LL
StatusDateUserResidueShiftSoftware
Unverified2018-05-09patgieD1ECA7AA2E6A8B__74056687Windows 64-bit,Prime95,v29.4,(aka Wg4)
History
DateUserTypeResult
2018-05-09patgieC-LLD1ECA7AA2E6A8B__
2017-09-10Oliver KruseNF-PM1B1=665000, B2=12967500, E=12
2017-03-07electron1897NFno factor TF: 75-76
2017-01-12Brian BeuningNFno factor TF: 74-75
2017-01-09RichD0NFno factor TF: 73-74
2016-12-08Judge HaleNFno factor TF: 72-73
2014-01-17-anonymous-NFno factor TF: 71-72
2013-07-15PascalBieriNFno factor TF: 70-71
2013-06-15PascalBieriNFno factor TF: 69-70
2013-06-14PEDNFno factor TF: 68-69
2013-04-16trifNFno factor TF: 67-68
2013-03-23trifNFno factor TF: 66-67
2012-09-12Carsten KossendeyNFno factor TF: 65-66
2010-12-20Architects CubedNFno factor TF: 64-65