Marin Mersenne 2^P-1
Username
Password
Forgot password?
Black
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
81629441Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 275
TF target 275
P-1
B1 = 695000
B2 = 14247500
LL
StatusDateUserResidueShift
Verified2017-07-17Evgeniy ZavialovFA1AAB1B6219648D4742301
Verified2025-08-02ManuelJCFA1AAB1B6219648D7896031
History
DateUserTypeResult
2025-08-02ManuelJCC-LL
FA1AAB1B6219648D
2017-07-17Evgeniy ZavialovC-LL
FA1AAB1B6219648D
2017-05-22TheJudgerNF-PM1
B1=695000, B2=14247500, E=12
2016-11-06TheJudgerNF
no factor from 2^74 to 2^75
2016-11-06TheJudgerNF
no factor from 2^73 to 2^74
2016-10-02Judge HaleNF
no factor from 2^72 to 2^73
2016-10-02Judge HaleNF
no factor from 2^71 to 2^72
2015-02-24monstNF
no factor from 2^70 to 2^71
2014-04-17mhskNF
no factor from 2^69 to 2^70
2014-04-07A_SavchenkoNF
no factor from 2^68 to 2^69
2014-04-03g0bNF
no factor from 2^67 to 2^68
2013-01-30phoenicisNF
no factor from 2^66 to 2^67
2011-02-28Jan KolomaznikNF
no factor from 2^65 to 2^66
2010-12-13Architects CubedNF
no factor from 2^64 to 2^65