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
99000037
Composite: proven not-prime with Lucas-Lehmer test
No factors below 277
TF target 276
P-1
B1 = 1115000
B2 = 28990000
LL
StatusDateUserResidueShiftSoftware
Verified2019-02-05Yxinity173504591C8552E711688449Windows 64-bit,Prime95,v29.4,(aka Wg4)
Verified2025-11-23Greg173504591C8552E70Linux64,prpll,v7.5
History
DateUserTypeResult
2025-11-23GregC-LL173504591C8552E7
2019-11-07ChuckNFno factor TF: 76-77
2019-11-07ChuckNFno factor TF: 75-76
2019-02-06YxinityNFno factor TF: 74-75
2019-02-05YxinityC-LL173504591C8552E7
2018-07-09mikrNFno factor TF: 73-74
2018-07-09mikrNFno factor TF: 72-73
2013-08-04-anonymous-NFno factor TF: 71-72
2012-05-01timbitNF-PM1B1=1115000, B2=28990000
2011-05-12UngelovendeNFno factor TF: 70-71
2011-05-09UngelovendeNFno factor TF: 69-70
2011-05-08UngelovendeNFno factor TF: 68-69
2011-05-08UngelovendeNFno factor TF: 67-68
2011-05-07UngelovendeNFno factor TF: 66-67
2011-02-21Rob_DeeNFno factor TF: 65-66
2011-01-301997rj7NFno factor TF: 64-65