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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
155255521No known factors, not tested for primality
TF
No factors below 278
TF target 278
P-1
B1 = 866000
B2 = 80400012
History
DateUserTypeResult
2025-07-12Ryan PropperNF-PM1
B1=866000, B2=80400012
2025-06-06RichardNF
no factor from 2^77 to 2^78
2024-10-26blin00NF
no factor from 2^76 to 2^77
2024-08-13SRBaseNF
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
2017-11-24AK76NF
no factor from 2^72 to 2^73
2017-11-24AK76NF
no factor from 2^71 to 2^72
2017-11-24AK76NF
no factor from 2^70 to 2^71
2017-08-06La GüiraNF
no factor from 2^69 to 2^70
2017-01-04workerthreadNF
no factor from 2^68 to 2^69
2016-05-05DerekNF
no factor from 2^67 to 2^68
2015-04-10vwflat4NF
no factor from 2^66 to 2^67
2013-02-08RichardNF
no factor from 2^65 to 2^66
2011-01-25RichardNF
no factor from 2^64 to 2^65