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
155123887No known factors, not tested for primality
TF
No factors below 278
TF target 278
P-1
B1 = 1095000
B2 = 260222340
History
DateUserTypeResult
2025-06-22brian-nebiusNF
no factor from 2^77 to 2^78
2025-01-12tscNF-PM1
B1=1095000, B2=260222340
2024-11-29ihnlNF
no factor from 2^76 to 2^77
2024-08-15SRBaseNF
no factor from 2^75 to 2^76
2023-02-16SRBaseNF
no factor from 2^74 to 2^75
2021-11-29SRBaseNF
no factor from 2^73 to 2^74
2017-07-06nranksNF
no factor from 2^72 to 2^73
2017-07-06nranksNF
no factor from 2^71 to 2^72
2017-07-06nranksNF
no factor from 2^70 to 2^71
2017-03-13La GüiraNF
no factor from 2^69 to 2^70
2017-03-03XolotlNF
no factor from 2^68 to 2^69
2016-05-05DerekNF
no factor from 2^67 to 2^68
2015-04-10guruNF
no factor from 2^66 to 2^67
2013-02-03prgamma10NF
no factor from 2^65 to 2^66
2011-01-22Charles A. MorrisNF
no factor from 2^64 to 2^65