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
42014519
Composite: proven not-prime with Lucas-Lehmer test
No factors below 273
TF target 272
P-1
B1 = 555000
B2 = 11238750
LL
StatusDateUserResidueShiftSoftware
Verified2008-09-24Joshua AdamsC654B10FB2FED5019124280Windows,Prime95,v24 final,(aka Wc1)
Verified2017-09-17DubslowC654B10FB2FED50116066817Linux 64-bit,Prime95,v28.7,build 1
History
DateUserTypeResult
2018-10-21Architects CubedNF-PM1B1=555000, B2=11238750, E=12
2018-08-10-anonymous-NFno factor TF: 72-73
2017-09-17DubslowC-LLC654B10FB2FED501
2015-09-11AirSquirrelsNFno factor TF: 71-72
2015-02-24David CampeauNFno factor TF: 70-71
2015-01-14chalsallNFno factor TF: 69-70
2013-12-13Torben K.NFno factor TF: 68-69
2008-09-23-anonymous-C-LLC654B10FB2FED501
2008-07-12-anonymous-NF-PM1B1=695000
2007-05-12Team Prime RibNFno factor TF: 1-68
2002-06-02Net_ForceNFno factor TF: 1-60