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
155007317No known factors, not tested for primality
TF
No factors below 278
TF target 278
P-1
B1 = 1337000
B2 = 1383308190
History
DateUserTypeResult
2025-06-21Yu ZhuNF
no factor from 2^77 to 2^78
2025-01-11James HeinrichNF
no factor from 2^76 to 2^77
2024-09-26Luke DurantNF-PM1
B1=1337000, B2=1383308190
2024-08-13SRBaseNF
no factor from 2^75 to 2^76
2023-02-16SRBaseNF
no factor from 2^74 to 2^75
2021-11-14SRBaseNF
no factor from 2^73 to 2^74
2018-02-27kevshawNF
no factor from 2^72 to 2^73
2017-09-01La GüiraNF
no factor from 2^71 to 2^72
2017-08-05pussijussiNF
no factor from 2^70 to 2^71
2014-10-08La GüiraNF
no factor from 2^69 to 2^70
2014-10-08La GüiraNF
no factor from 2^68 to 2^69
2014-10-08La GüiraNF
no factor from 2^66 to 2^68
2013-02-02Grant McCrackenNF
no factor from 2^65 to 2^66
2011-02-25riccardo ubertiNF
no factor from 2^64 to 2^65
2010-06-26Charles A. MorrisNF
no factor from 2^63 to 2^64