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
49585297
Composite: proven not-prime with Lucas-Lehmer test
No factors below 274
TF target 273
P-1
B1 = 575000
B2 = 15093750
LL
StatusDateUserResidueShiftSoftware
Bad2010-10-29henry florence78F2EEFC834C01ED19661586Windows 64-bit,Prime95,v25.11,build 2
Verified2015-10-22Architects Cubed4E46D9D7A82E751819239487Linux 64-bit,Prime95,v27.9,build 1
Verified2016-09-09endless_mike4E46D9D7A82E751846704489Linux 64-bit,Prime95,v28.9,build 2
History
DateUserTypeResult
2024-08-16tbusbyNFno factor TF: 69-70
2019-07-06-anonymous-NFno factor TF: 73-74
2017-09-11Sid & AndyNFno factor TF: 72-73
2016-09-09endless_mikeC-LL4E46D9D7A82E7518
2015-10-22Architects CubedC-LL4E46D9D7A82E7518
2015-08-08Mark RoseNFno factor TF: 71-72
2015-07-26Mark RoseNFno factor TF: 70-71
2015-07-23Architects CubedNFno factor TF: 69-70
2010-10-29henry florenceC-LL78F2EEFC834C01ED
2010-06-13henry florenceNF-PM1B1=575000, B2=15093750
2008-11-18Dalos LeeNFno factor TF: 1-69
2008-10-27Dalos LeeNFno factor TF: 1-69
2007-07-241997rj7NFno factor TF: 1-63
2003-12-13Team Prime RibNFno factor TF: 1-59