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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
64275481Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 274
P-1
B1 = 570000
B2 = 10687500
LL
StatusDateUserResidueShift
Verified2014-10-10curtiscC952D14AF39ED4E012038234
Verified2022-10-01Ryan PropperC952D14AF39ED4E057379154
History
DateUserTypeResult
2022-10-01Ryan PropperC-LL
C952D14AF39ED4E0
2016-02-23Mark RoseNF
no factor from 2^60 to 2^63
2014-10-10curtiscC-LL
C952D14AF39ED4E0
2014-01-28LarryGNF-PM1
B1=570000, B2=10687500
2013-10-23RichD0NF
no factor from 2^73 to 2^74
2013-05-09AxelssonNF
no factor from 2^72 to 2^73
2013-05-09AxelssonNF
no factor from 2^71 to 2^72
2013-05-09AxelssonNF
no factor from 2^70 to 2^71
2012-04-15Lewis GregoryNF
no factor from 2^69 to 2^70
2009-10-23-Anonymous-NF
no factor from 2^68 to 2^69
2009-10-16OS1NF
no factor from 2^67 to 2^68
2009-10-15lindedNF
no factor from 2^66 to 2^67
2009-10-09Sturle SundeNF
no factor from 2^65 to 2^66
2009-10-08-Anonymous-NF
no factor from 2^64 to 2^65
2009-03-09Alexander RyazanovNF
no factor from 2^63 to 2^64