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
74340751
Composite: proven not-prime with Lucas-Lehmer test
No factors below 275
TF target 274
P-1
B1 = 1800000
B2 = 1177928640
LL
StatusDateUserResidueShiftSoftware
Verified2017-03-05heiopeiF625BB7FC902F24B3340529Linux 64-bit,Prime95,v28.7,build 1
Verified2025-08-07RaydexF625BB7FC902F24B8860623Windows 64-bit,Prime95,v30.8,build 17
History
DateUserTypeResult
2025-08-07RaydexC-LL
F625BB7FC902F24B
2025-05-19JurzalNF-PM1B1=1800000, B2=1177928640
2017-03-05heiopeiC-LL
F625BB7FC902F24B
2016-07-08-anonymous-NFno factor TF: 74-75
2014-09-02James HeinrichNF-PM1B1=685000, B2=14042500, E=6
2013-12-07La GüiraNFno factor TF: 73-74
2013-12-07La GüiraNFno factor TF: 72-73
2013-12-07La GüiraNFno factor TF: 71-72
2013-12-07La GüiraNFno factor TF: 70-71
2013-05-11PascalBieriNFno factor TF: 69-70
2010-12-03Kelly LowderNFno factor TF: 68-69
2010-11-29Helmut ZulusNFno factor TF: 67-68
2010-09-16Manfred FNFno factor TF: 66-67
2010-09-14Per JessenNFno factor TF: 65-66
2010-07-06David Hdez MorenoNFno factor TF: 64-65
2008-09-12lycornNFno factor TF: 1-64
2002-03-31JossNFno factor TF: 1-57