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
171792799No known factors, not tested for primality
TF
No factors below 278
TF target 278
P-1
B1 = 1500000
B2 = 1500000
History
DateUserTypeResult
2025-10-05Cong ShengzhuoNF-PM1
B1=1500000
2025-09-07Cong ShengzhuoNF
no factor from 2^77 to 2^78
2025-07-28Cong ShengzhuoNF
no factor from 2^76 to 2^77
2024-09-19SRBaseNF
no factor from 2^75 to 2^76
2023-03-22SRBaseNF
no factor from 2^74 to 2^75
2021-12-21SRBaseNF
no factor from 2^73 to 2^74
2018-03-12RichardNF
no factor from 2^72 to 2^73
2018-03-10RichardNF
no factor from 2^71 to 2^72
2018-03-10Daniil TsarkovNF
no factor from 2^70 to 2^71
2016-10-22Mihai PredaNF
no factor from 2^69 to 2^70
2016-08-29Adam BuranNF
no factor from 2^68 to 2^69
2016-04-28XZTNF
no factor from 2^67 to 2^68
2015-06-19Maurizio FD - ItalyNF
no factor from 2^66 to 2^67
2013-04-03subgeniusNF
no factor from 2^65 to 2^66
2011-02-26tscNF
no factor from 2^64 to 2^65
2010-07-11Charles A. MorrisNF
no factor from 2^63 to 2^64