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
158616841No known factors, not tested for primality
TF
No factors below 278
TF target 278
P-1
B1 = 1373000
B2 = 1476497880
History
DateUserTypeResult
2025-07-31GregNF
no factor from 2^77 to 2^78
2025-07-03Gordon BowerNF
no factor from 2^76 to 2^77
2024-10-01Luke DurantNF-PM1
B1=1373000, B2=1476497880
2024-08-16SRBaseNF
no factor from 2^75 to 2^76
2023-02-26SRBaseNF
no factor from 2^74 to 2^75
2021-11-21SRBaseNF
no factor from 2^73 to 2^74
2018-06-21JMGarciaNF
no factor from 2^72 to 2^73
2017-12-21Torikova_SvetlanaNF
no factor from 2^71 to 2^72
2017-12-21proxy2222NF
no factor from 2^70 to 2^71
2017-12-12La GüiraNF
no factor from 2^69 to 2^70
2017-03-12XolotlNF
no factor from 2^68 to 2^69
2016-05-14ANONYMOUSNF
no factor from 2^67 to 2^68
2015-04-27subgeniusNF
no factor from 2^66 to 2^67
2013-02-21GrunwalderGIMPNF
no factor from 2^65 to 2^66
2011-01-30runeskNF
no factor from 2^64 to 2^65
2010-06-28Torchwood InstituteNF
no factor from 2^63 to 2^64