Marin Mersenne 2^P-1
Username
Password
Forgot password?
Black
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
155611259No known factors, not tested for primality
TF
No factors below 278
TF target 278
P-1
B1 = 1241000
B2 = 972431790
History
DateUserTypeResult
2025-08-05Yu ZhuNF-PM1
B1=1241000, B2=972431790
2025-06-03Ave MujicaNF
no factor from 2^77 to 2^78
2024-11-07opellyNF
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
2021-11-15SRBaseNF
no factor from 2^73 to 2^74
2017-12-17David HruskaNF
no factor from 2^72 to 2^73
2017-11-05David HruskaNF
no factor from 2^71 to 2^72
2017-10-14David HruskaNF
no factor from 2^70 to 2^71
2017-08-13La GüiraNF
no factor from 2^69 to 2^70
2016-08-02PascalBieriNF
no factor from 2^68 to 2^69
2016-05-03kevshawNF
no factor from 2^67 to 2^68
2015-04-12OS1NF
no factor from 2^66 to 2^67
2013-02-04OS1NF
no factor from 2^65 to 2^66
2011-01-23Charles A. MorrisNF
no factor from 2^64 to 2^65