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
39589661
Composite: proven not-prime with Lucas-Lehmer test
No factors below 273
TF target 272
P-1
B1 = 550000
B2 = 11550000
LL
StatusDateUserResidueShiftSoftware
Verified2010-09-12Yves BellefeuilleBDB67C10082C8A3531364582Linux 32-bit,Prime95,v25.9,build 4
Verified2017-03-15DubslowBDB67C10082C8A3533953466Linux 64-bit,Prime95,v28.7,build 1
History
DateUserTypeResult
2022-05-17Sid & AndyNFno factor TF: 72-73
2019-07-16Architects CubedNF-PM1B1=550000, B2=11550000, E=12
2019-06-08monstNFno factor TF: 71-72
2017-03-15DubslowC-LLBDB67C10082C8A35
2014-12-12ktonyNFno factor TF: 70-71
2014-12-08BdotNFno factor TF: 69-70
2010-09-12Yves BellefeuilleC-LLBDB67C10082C8A35
2009-03-05-anonymous-NF-PM1B1=585000
2006-11-09tscNFno factor TF: 1-69
2001-03-05JossNFno factor TF: 1-56