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
25755181
Composite: proven not-prime with Lucas-Lehmer test
No factors below 275
TF target 270
P-1
B1 = 1328000
B2 = 2438791740
LL
StatusDateUserResidueShiftSoftware
Verified2006-07-25A.G.01209B76C495C70020136078Windows,Prime95,v23,(aka WZ1)
Verified2012-05-03Dubslow01209B76C495C7000CUDALucas v2.00a
History
DateUserTypeResult
2025-12-14Jason LynchNF-PM1B1=1328000, B2=2438791740
2021-10-17TheJudgerNFno factor TF: 74-75
2021-09-19TheJudgerNFno factor TF: 73-74
2021-08-28TheJudgerNFno factor TF: 72-73
2021-08-28TheJudgerNFno factor TF: 71-72
2021-07-09mikrNFno factor TF: 70-71
2017-03-26ramgeisNFno factor TF: 69-70
2012-05-03DubslowC-LL01209B76C495C700
2011-11-06David CampeauNFno factor TF: 68-69
2011-11-02Carsten KossendeyNFno factor TF: 67-68
2006-07-25-anonymous-C-LL01209B76C495C700
2006-02-01-anonymous-NF-PM1B1=245000, B2=1163750
2004-06-21ANONYMOOSNFno factor TF: 1-67
2004-06-04ANONYMOOSNFno factor TF: 1-67
2004-04-291997rj7NFno factor TF: 1-62
2001-08-12Net_ForceNFno factor TF: 1-56