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
49844057
Composite: proven not-prime with Lucas-Lehmer test
No factors below 274
TF target 273
P-1
B1 = 1000000
B2 = 20000000
LL
StatusDateUserResidueShiftSoftware
Verified2013-01-24curtisc3B9FB9B4263272DD19397387Windows Service,Prime95,v27.7,build 2
Verified2019-12-30Dubslow3B9FB9B4263272DD47031297Linux 64-bit,Prime95,v29.8,build 6
History
DateUserTypeResult
2019-12-30DubslowC-LL3B9FB9B4263272DD
2019-08-30Sid & AndyNF-PM1B1=1000000, B2=20000000, E=12
2019-07-06-anonymous-NFno factor TF: 73-74
2018-01-22Mark RoseNFno factor TF: 72-73
2013-01-24curtiscC-LL3B9FB9B4263272DD
2012-01-20GregNFno factor TF: 71-72
2012-01-05GregNFno factor TF: 70-71
2012-01-02Craig MeyersNFno factor TF: 69-70
2010-02-13JamesNF-PM1B1=785000
2008-09-06fes016NFno factor TF: 1-69
2000-10-07JossNFno factor TF: 1-51