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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Exponent Range:










MnStatusDetails
62573261Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 274
P-1
B1 = 560000
B2 = 11060000
LL
StatusDateUserResidueShift
Verified2013-12-27curtiscCD4B321CA2B2ADEB61075570
Verified2022-11-30Ryan PropperCD4B321CA2B2ADEB22563989
Verified2023-01-21Sergey NosovCD4B321CA2B2ADEB53564609
History
DateUserTypeResult
2023-01-21Sergey NosovC-LL
CD4B321CA2B2ADEB
2022-11-30Ryan PropperC-LL
CD4B321CA2B2ADEB
2016-02-23Mark RoseNF
no factor from 2^59 to 2^63
2013-12-27curtiscC-LL
CD4B321CA2B2ADEB
2013-07-03Jerry HallettNF-PM1
B1=560000, B2=11060000, E=12
2013-07-01gcardonaNF
no factor from 2^73 to 2^74
2013-03-29electron1897NF
no factor from 2^72 to 2^73
2012-09-05SWL551NF
no factor from 2^71 to 2^72
2012-09-05SWL551NF
no factor from 2^70 to 2^71
2011-12-11eon_blue_apocalypseNF
no factor from 2^69 to 2^70
2009-08-31Dr. NowakNF
no factor from 2^68 to 2^69
2009-08-26Dr. NowakNF
no factor from 2^67 to 2^68
2009-08-25David BarleyNF
no factor from 2^66 to 2^67
2009-08-20lindedNF
no factor from 2^65 to 2^66
2009-08-17jschmittNF
no factor from 2^64 to 2^65
2009-01-27Wojciech FlorekNF
no factor from 2^63 to 2^64