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
155351587No known factors, not tested for primality
TF
No factors below 278
TF target 278
P-1
B1 = 922000
B2 = 113939280
History
DateUserTypeResult
2025-07-24JaytholomewNF-PM1
B1=922000, B2=113939280
2025-06-03HelderGIMPNF
no factor from 2^77 to 2^78
2024-11-13hktNF
no factor from 2^76 to 2^77
2024-08-13SRBaseNF
no factor from 2^75 to 2^76
2023-02-18SRBaseNF
no factor from 2^74 to 2^75
2017-10-12La GüiraNF
no factor from 2^73 to 2^74
2017-10-12La GüiraNF
no factor from 2^72 to 2^73
2017-08-08David HruskaNF
no factor from 2^71 to 2^72
2017-07-13David HruskaNF
no factor from 2^70 to 2^71
2017-02-14La GüiraNF
no factor from 2^69 to 2^70
2016-07-28Mihai PredaNF
no factor from 2^68 to 2^69
2016-05-05DerekNF
no factor from 2^67 to 2^68
2015-04-11guruNF
no factor from 2^66 to 2^67
2013-04-04subgeniusNF
no factor from 2^65 to 2^66
2011-01-23carlos56NF
no factor from 2^64 to 2^65