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
156808921No known factors, not tested for primality
TF
No factors below 278
TF target 278
P-1
B1 = 1286000
B2 = 830043690
History
DateUserTypeResult
2025-06-20Section 31NF
no factor from 2^77 to 2^78
2025-01-11JurzalNF
no factor from 2^76 to 2^77
2024-09-06Luke DurantNF-PM1
B1=1286000, B2=830043690
2024-08-26SRBaseNF
no factor from 2^75 to 2^76
2024-05-06GregNF
no factor from 2^68 to 2^69
2023-02-22SRBaseNF
no factor from 2^74 to 2^75
2021-11-17SRBaseNF
no factor from 2^73 to 2^74
2018-03-14RichardNF
no factor from 2^72 to 2^73
2017-09-14Will EdgingtonNF
no factor from 2^71 to 2^72
2017-09-14Will EdgingtonNF
no factor from 2^70 to 2^71
2016-08-11La GüiraNF
no factor from 2^69 to 2^70
2016-07-21Josh FamestadNF
no factor from 2^68 to 2^69
2016-05-07Mr-PlonkNF
no factor from 2^67 to 2^68
2015-04-21GrunwalderGIMPNF
no factor from 2^66 to 2^67
2013-02-10Massimo Cappelli (ik5pwa)NF
no factor from 2^65 to 2^66
2011-01-26Mr-PlonkNF
no factor from 2^64 to 2^65