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
81879521
Tested as composite (unverified): unconfirmed Lucas-Lehmer test says not-prime
No factors below 275
TF target 275
P-1
B1 = 695000
B2 = 13900000
LL
StatusDateUserResidueShiftSoftware
Unverified2018-03-18patgieCBBAADA9B69690__58088652Windows 64-bit,Prime95,v29.4,(aka Wg4)
History
DateUserTypeResult
2018-03-18patgieC-LLCBBAADA9B69690__
2016-10-16TheJudgerNF-PM1B1=695000, B2=13900000, E=6
2016-10-08Mark RoseNFno factor TF: 74-75
2016-10-08Mark RoseNFno factor TF: 73-74
2016-07-27BdotNFno factor TF: 72-73
2016-07-27BdotNFno factor TF: 71-72
2011-03-03steinrarNFno factor TF: 70-71
2011-03-03steinrarNFno factor TF: 69-70
2011-03-03steinrarNFno factor TF: 68-69
2011-03-03steinrarNFno factor TF: 67-68
2011-03-03steinrarNFno factor TF: 65-67
2010-12-10Architects CubedNFno factor TF: 64-65