Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
82331831Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 276
TF target 275
P-1
B1 = 700000
B2 = 14175000
LL
StatusDateUserResidueShift
Verified2017-12-18curtisc88DF95F8024215D329412595
Verified2025-09-14brode-runner88DF95F8024215D378708839
History
DateUserTypeResult
2025-09-14brode-runnerC-LL
88DF95F8024215D3
2025-09-10Sid & AndyNF
no factor from 2^75 to 2^76
2017-12-18curtiscC-LL
88DF95F8024215D3
2017-07-16bamNF-PM1
B1=700000, B2=14175000, E=6
2016-12-10Brian BeuningNF
no factor from 2^74 to 2^75
2016-12-10Brian BeuningNF
no factor from 2^73 to 2^74
2016-11-03Judge HaleNF
no factor from 2^72 to 2^73
2016-11-03Judge HaleNF
no factor from 2^71 to 2^72
2014-08-12SMoffatNF
no factor from 2^70 to 2^71
2013-02-15MadPooNF
no factor from 2^69 to 2^70
2013-02-09MadPooNF
no factor from 2^68 to 2^69
2013-01-30phoenicisNF
no factor from 2^67 to 2^68
2011-03-21Ake TilanderNF
no factor from 2^66 to 2^67
2011-03-17Ake TilanderNF
no factor from 2^65 to 2^66
2010-12-14Architects CubedNF
no factor from 2^64 to 2^65