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
49505707
Composite: proven not-prime with Lucas-Lehmer test
No factors below 274
TF target 273
P-1
B1 = 575000
B2 = 14231250
LL
StatusDateUserResidueShiftSoftware
Bad2010-05-25David_Harvey8B0B75C78C083BC927484549Windows,Prime95,v25.11,build 2
Verified2015-09-29George WoltmanEAE51850B6DA3B3B7048CUDALucas v2.05 Beta
Verified2016-09-08endless_mikeEAE51850B6DA3B3B40498825Linux 64-bit,Prime95,v28.9,build 2
History
DateUserTypeResult
2024-08-16tbusbyNFno factor TF: 69-70
2019-07-02-anonymous-NFno factor TF: 73-74
2017-09-10Sid & AndyNFno factor TF: 72-73
2016-09-08endless_mikeC-LLEAE51850B6DA3B3B
2015-09-29George WoltmanC-LLEAE51850B6DA3B3B
2015-08-08Mark RoseNFno factor TF: 71-72
2015-07-26Mark RoseNFno factor TF: 70-71
2015-07-23Architects CubedNFno factor TF: 69-70
2010-05-25David_HarveyC-LL8B0B75C78C083BC9
2010-04-10David_HarveyNF-PM1B1=575000, B2=14231250
2008-11-18-anonymous-NFno factor TF: 1-69
2008-11-12-anonymous-NFno 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