Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
68756971Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 275
TF target 274
P-1
B1 = 625000
B2 = 12968750
LL
StatusDateUserResidueShift
Verified2016-08-25Brian Beuning96FF5F32133ADD9E53488761
Verified2023-09-14Mirra96FF5F32133ADD9E32586709
History
DateUserTypeResult
2023-09-14MirraC-LL
96FF5F32133ADD9E
2016-08-25Brian BeuningC-LL
96FF5F32133ADD9E
2016-03-26Mark RoseNF
no factor from 2^74 to 2^75
2014-11-23TheJudgerNF-PM1
B1=625000, B2=12968750, E=12
2014-11-16The MawnNF
no factor from 2^73 to 2^74
2014-11-16The MawnNF
no factor from 2^72 to 2^73
2014-08-17RichD0NF
no factor from 2^71 to 2^72
2013-06-28frmarNF
no factor from 2^70 to 2^71
2012-03-11-Anonymous-NF
no factor from 2^69 to 2^70
2010-04-28krnb1004NF
no factor from 2^68 to 2^69
2010-04-20HighFlyingPrimesNF
no factor from 2^67 to 2^68
2010-04-15lindedNF
no factor from 2^66 to 2^67
2010-04-09Markus KrämerNF
no factor from 2^65 to 2^66
2010-04-08-Anonymous-NF
no factor from 2^64 to 2^65
2008-11-101997rj7NF
no factor to 2^64