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
40437613
Composite: proven not-prime with Lucas-Lehmer test
No factors below 273
TF target 272
P-1
B1 = 1000000
B2 = 20000000
LL
StatusDateUserResidueShiftSoftware
Bad2008-01-15Aaron SellsE1496EA816FE4C451566577Linux 32-bit,Prime95,v24 final,(aka Wc2)
Verified2016-08-06endless_mike298DB2D48FDF58DE36461515Windows 64-bit,Prime95,v28.9,build 2
Verified2016-09-14Mark Rose298DB2D48FDF58DE4358360Linux 64-bit,Prime95,v28.9,build 2
History
DateUserTypeResult
2024-05-29mrhNFno factor TF: 68-69
2019-08-04Sid & AndyNF-PM1B1=1000000, B2=20000000, E=12
2019-03-21Sid & AndyNFno factor TF: 72-73
2016-09-14Mark RoseC-LL298DB2D48FDF58DE
2016-08-06endless_mikeC-LL298DB2D48FDF58DE
2015-04-01Gordon SpenceNFno factor TF: 71-72
2014-12-21ChuckNFno factor TF: 70-71
2014-12-21ChuckNFno factor TF: 69-70
2013-11-08Carsten KossendeyNFno factor TF: 68-69
2008-01-15ANONYMOUSC-LLE1496EA816FE4C45
2007-10-17ANONYMOUSNF-PM1B1=665000
2007-06-15James HintzNFno factor TF: 1-68