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
84228257
Tested as composite (unverified): unconfirmed Lucas-Lehmer test says not-prime
No factors below 276
TF target 275
P-1
B1 = 715000
B2 = 15551250
LL
StatusDateUserResidueShiftSoftware
Unverified2018-07-12patgie89271A4CE1AF75__27588617Windows 64-bit,Prime95,v29.4,(aka Wg4)
History
DateUserTypeResult
2018-07-12patgieC-LL89271A4CE1AF75__
2017-11-11KrieselNF-PM1B1=715000, B2=15551250, E=2
2017-04-19TheJudgerNFno factor TF: 74-75
2017-04-19TheJudgerNFno factor TF: 75-76
2017-03-21RichD0NFno factor TF: 73-74
2017-01-11Judge HaleNFno factor TF: 72-73
2017-01-11Judge HaleNFno factor TF: 71-72
2014-03-06dufrenbkNFno factor TF: 70-71
2013-12-17SMoffatNFno factor TF: 69-70
2013-12-15SMoffatNFno factor TF: 68-69
2013-12-12SMoffatNFno factor TF: 67-68
2013-02-18Juergen KampmeierNFno factor TF: 66-67
2012-09-13Carsten KossendeyNFno factor TF: 65-66
2010-12-23Architects CubedNFno factor TF: 64-65