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
39917869
Composite: proven not-prime with Lucas-Lehmer test
No factors below 274
TF target 272
P-1
B1 = 640000
B2 = 640000
LL
StatusDateUserResidueShiftSoftware
Verified2010-09-13CSLatDD9718325EEA350FB28115471Windows 64-bit,Prime95,v25.11,build 2
Verified2017-04-28Dubslow9718325EEA350FB238653000Linux 64-bit,Prime95,v28.7,build 1
History
DateUserTypeResult
2020-02-01-anonymous-NFno factor TF: 73-74
2019-10-18-anonymous-NFno factor TF: 72-73
2019-03-29monstNFno factor TF: 71-72
2017-04-28DubslowC-LL9718325EEA350FB2
2014-12-18Mark RoseNFno factor TF: 70-71
2014-12-17VictordeHollanderNFno factor TF: 69-70
2013-10-04Le ComteNFno factor TF: 68-69
2010-09-13CSLatDDC-LL9718325EEA350FB2
2008-10-04-anonymous-NF-PM1B1=640000
2006-11-28Jonathan CrombieNFno factor TF: 1-68