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
38355293
Composite: proven not-prime with Lucas-Lehmer test
No factors below 273
TF target 272
P-1
B1 = 600000
B2 = 12000000
LL
StatusDateUserResidueShiftSoftware
Verified2007-12-03Joachim Haberer2F211AA719C73A6C26135447Windows,Prime95,v24 final,(aka Wc1)
Verified2016-12-19Dubslow2F211AA719C73A6C12024965Linux 64-bit,Prime95,v28.7,build 1
History
DateUserTypeResult
2019-05-31Sid & AndyNFno factor TF: 72-73
2019-02-06monstNFno factor TF: 71-72
2016-12-19DubslowC-LL2F211AA719C73A6C
2014-12-01VictordeHollanderNFno factor TF: 70-71
2014-11-23chalsallNFno factor TF: 69-70
2014-07-13HBendtzNF-PM1B1=600000, B2=12000000, E=12
2007-12-03-anonymous-C-LL2F211AA719C73A6C
2007-10-29-anonymous-NF-PM1B1=550000
2006-07-10tscNFno factor TF: 1-69
2003-09-14-anonymous-NFno factor TF: 1-59
2003-09-09-anonymous-NFno factor TF: 1-60