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
98756837
Composite: proven not-prime with Lucas-Lehmer test
No factors below 277
TF target 276
P-1
B1 = 815000
B2 = 16707500
LL
StatusDateUserResidueShiftSoftware
Verified2020-05-04-anonymous-66CBB594AF10E10B42509100Windows,Prime95,v28.6,build 1
Verified2026-02-19Greg66CBB594AF10E10B0Linux64,prpll,v46386d0
History
DateUserTypeResult
2026-02-19GregC-LL66CBB594AF10E10B
2020-05-04-anonymous-C-LL66CBB594AF10E10B
2019-11-15TheJudgerNFno factor TF: 76-77
2019-10-15Ryan PropperNF-PM1B1=815000, B2=16707500, E=6
2019-10-14bsquaredNFno factor TF: 75-76
2019-01-20masserNFno factor TF: 74-75
2013-12-24La GüiraNFno factor TF: 73-74
2013-12-24La GüiraNFno factor TF: 72-73
2013-12-24La GüiraNFno factor TF: 71-72
2013-12-24La GüiraNFno factor TF: 70-71
2013-12-24La GüiraNFno factor TF: 69-70
2013-08-18RobishNFno factor TF: 68-69
2013-08-16-anonymous-NFno factor TF: 67-68
2013-07-31SMoffatNFno factor TF: 66-67
2013-07-29David CampeauNFno factor TF: 65-66
2011-01-241997rj7NFno factor TF: 64-65