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
37979801
Composite: proven not-prime with Lucas-Lehmer test
No factors below 273
TF target 271
P-1
B1 = 725000
B2 = 16312500
LL
StatusDateUserResidueShiftSoftware
Verified2009-10-05Dan H62B3EA7519274E1428641793Windows,Prime95,v25.9,build 4
Verified2014-08-27Dubslow62B3EA7519274E1431726589Linux 64-bit,Prime95,v28.5,build 2
History
DateUserTypeResult
2024-05-26LaurVNFno factor TF: 68-69
2022-07-05RichD0NFno factor TF: 72-73
2018-05-31Architects CubedNF-PM1B1=725000, B2=16312500, E=12
2018-05-26Architects CubedNFno factor TF: 71-72
2014-08-27DubslowC-LL62B3EA7519274E14
2014-04-03Jerry HallettNFno factor TF: 70-71
2014-04-03Jerry HallettNFno factor TF: 69-70
2013-09-04Carsten KossendeyNFno factor TF: 68-69
2009-10-05Dan HC-LL62B3EA7519274E14
2007-03-20AmperioNF-PM1B1=610000
2006-05-29-anonymous-NFno factor TF: 1-68