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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
155781187No known factors, not tested for primality
TF
No factors below 278
TF target 278
P-1
B1 = 911000
B2 = 87542994
History
DateUserTypeResult
2025-06-21brian-nebiusNF
no factor from 2^77 to 2^78
2024-11-11Ryan PropperNF-PM1
B1=911000, B2=87542994
2024-11-04Matthew Raymond VaughnNF
no factor from 2^76 to 2^77
2024-08-15SRBaseNF
no factor from 2^75 to 2^76
2023-02-18SRBaseNF
no factor from 2^74 to 2^75
2021-11-15SRBaseNF
no factor from 2^73 to 2^74
2018-04-12Choi4KANGNF
no factor from 2^71 to 2^72
2018-03-11hktNF
no factor from 2^72 to 2^73
2018-01-27ZenghuiNF
no factor from 2^71 to 2^72
2017-07-28EratosthenesNF
no factor from 2^70 to 2^71
2017-01-16d3zorgNF
no factor from 2^69 to 2^70
2017-01-14d3zorgNF
no factor from 2^68 to 2^69
2016-05-05rubikvn2100NF
no factor from 2^67 to 2^68
2015-04-12tscNF
no factor from 2^66 to 2^67
2013-02-10RichardNF
no factor from 2^65 to 2^66
2011-01-24sasaki3NF
no factor from 2^64 to 2^65