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
43993823
Composite: proven not-prime with Lucas-Lehmer test
No factors below 273
TF target 272
P-1
B1 = 530000
B2 = 15105000
LL
StatusDateUserResidueShiftSoftware
Bad2010-09-14dflowers5A350DF754761C6830199669Windows 64-bit,Prime95,v25.9,build 4
Verified2015-11-02George Woltman476D7C1C36E637C022505352Mac OS X 64-bit,Prime95,v28.7,build 1
Verified2016-09-11kkmrkkblmbrbk476D7C1C36E637C035979641Linux 64-bit,Prime95,v28.9,build 2
History
DateUserTypeResult
2018-08-09-anonymous-NFno factor TF: 72-73
2016-09-11kkmrkkblmbrbkC-LL476D7C1C36E637C0
2015-11-02George WoltmanC-LL476D7C1C36E637C0
2015-07-24Mark RoseNFno factor TF: 71-72
2015-06-20Mark RoseNFno factor TF: 70-71
2015-04-26LaurVNFno factor TF: 69-70
2014-03-14bayanneNFno factor TF: 68-69
2010-09-14dflowersC-LL5A350DF754761C68
2010-07-20dflowersNF-PM1B1=530000, B2=15105000, E=6
2007-09-28WileECoyoteNFno factor TF: 1-68
2007-08-14abcNFno factor TF: 1-63