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
83455817
Composite: proven not-prime with Lucas-Lehmer test
No factors below 276
TF target 275
P-1
B1 = 665000
B2 = 12967500
LL
StatusDateUserResidueShiftSoftware
Verified2018-02-27patgieA06CB910E857561A11535986Windows 64-bit,Prime95,v29.4,(aka Wg4)
Verified2026-02-01GregA06CB910E857561A0Linux64,prpll,v46386d0
History
DateUserTypeResult
2026-02-01GregC-LLA06CB910E857561A
2018-02-27patgieC-LLA06CB910E857561A
2017-04-09TheJudgerNF-PM1B1=665000, B2=12967500, E=12
2017-03-24-anonymous-NFno factor TF: 75-76
2017-01-14AirSquirrelsNFno factor TF: 74-75
2017-01-14AirSquirrelsNFno factor TF: 73-74
2016-12-13Judge HaleNFno factor TF: 72-73
2016-12-13Judge HaleNFno factor TF: 71-72
2013-11-13SMoffatNFno factor TF: 70-71
2013-03-17-anonymous-NFno factor TF: 69-70
2013-03-10-anonymous-NFno factor TF: 68-69
2013-03-07S36049NFno factor TF: 67-68
2013-02-10SMoffatNFno factor TF: 66-67
2012-08-05Carsten KossendeyNFno factor TF: 65-66
2010-12-07Architects CubedNFno factor TF: 64-65