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
49520501
Composite: proven not-prime with Lucas-Lehmer test
No factors below 274
TF target 273
P-1
B1 = 1000000
B2 = 20000000
LL
StatusDateUserResidueShiftSoftware
Bad2012-12-22Viacheslav Chernetskiy656570A285E978AB47745456Windows 64-bit,Prime95,v27.7,build 2
Verified2015-07-29Architects Cubed60A108A3CCC2CC6B14429287Linux 64-bit,Prime95,v27.9,build 1
Verified2016-09-09endless_mike60A108A3CCC2CC6B40745011Linux 64-bit,Prime95,v28.9,build 2
History
DateUserTypeResult
2019-07-02-anonymous-NFno factor TF: 73-74
2019-06-08Sid & AndyNF-PM1B1=1000000, B2=20000000, E=12
2017-09-10Sid & AndyNFno factor TF: 72-73
2016-09-09endless_mikeC-LL60A108A3CCC2CC6B
2015-07-29Architects CubedC-LL60A108A3CCC2CC6B
2012-12-22Viacheslav ChernetskiyC-LL656570A285E978AB
2012-01-16megavinkNFno factor TF: 71-72
2012-01-09Kevin JagetNFno factor TF: 70-71
2011-11-22laleraNFno factor TF: 69-70
2011-09-07BstuckNF-PM1B1=785000
2008-08-07precius1NFno factor TF: 1-69
2007-06-151997rj7NFno factor TF: 1-63
2003-12-13Team Prime RibNFno factor TF: 1-59
2000-10-15JossNFno factor TF: 1-58