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
62572387Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 274
P-1
B1 = 560000
B2 = 11060000
LL
StatusDateUserResidueShift
Verified2014-06-25ANONYMOUSBC0E9AD0E9071C9432900058
Verified2023-01-27SyntonyBC0E9AD0E9071C9412868792
Verified2024-04-08WadesWorld19BC0E9AD0E9071C9458902271
History
DateUserTypeResult
2024-04-08WadesWorld19C-LL
BC0E9AD0E9071C94
2023-01-27SyntonyC-LL
BC0E9AD0E9071C94
2016-02-23Mark RoseNF
no factor from 2^59 to 2^63
2014-06-25ANONYMOUSC-LL
BC0E9AD0E9071C94
2013-10-12James HeinrichNF-PM1
B1=560000, B2=11060000, E=6
2013-10-07AxelssonNF
no factor from 2^73 to 2^74
2013-03-22electron1897NF
no factor from 2^72 to 2^73
2012-09-04SWL551NF
no factor from 2^71 to 2^72
2012-09-04SWL551NF
no factor from 2^70 to 2^71
2011-12-11David BarleyNF
no factor from 2^69 to 2^70
2009-10-25QuesterNF
no factor from 2^68 to 2^69
2009-02-22Sturle SundeNF
no factor from 2^67 to 2^68
2009-02-21Sturle SundeNF
no factor from 2^66 to 2^67
2009-02-21symalladNF
no factor from 2^65 to 2^66
2009-02-18-Anonymous-NF
no factor from 2^64 to 2^65
2009-01-27Wojciech FlorekNF
no factor from 2^63 to 2^64