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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
138622331Composite: proven not-prime with PRP test
TF
No factors below 277
TF target 277
P-1
B1 = 1165000
B2 = 1157544960
PRP
StatusDateUserResidueShiftTypeBase
Verified2025-08-18Mihai Preda51405B6B48E555CB013
History
DateUserTypeResult
2025-08-18JJCCERT
PRP Certification
CERT proof power = 10
Proof certified good
2025-08-18Mihai PredaC-PRP
51405B6B48E555CB
PRP proof power = 10
PRP: Verified
Proof certified good
2024-09-21Luke DurantNF-PM1
B1=1165000, B2=1157544960
2024-08-02Luke DurantNF
no factor from 2^76 to 2^77
2024-07-17SRBaseNF
no factor from 2^75 to 2^76
2023-01-16SRBaseNF
no factor from 2^74 to 2^75
2021-08-02SRBaseNF
no factor from 2^73 to 2^74
2020-10-26SRBaseNF
no factor from 2^72 to 2^73
2017-02-12XZTNF
no factor from 2^71 to 2^72
2017-02-12guruNF
no factor from 2^70 to 2^71
2017-02-11proxy2222NF
no factor from 2^69 to 2^70
2017-01-10proxy2222NF
no factor from 2^68 to 2^69
2016-03-02dbaughNF
no factor from 2^67 to 2^68
2015-02-08vwflat4NF
no factor from 2^66 to 2^67
2012-11-19ALSNF
no factor from 2^65 to 2^66
2010-12-06OS1NF
no factor from 2^64 to 2^65
2010-06-12sasaki3NF
no factor from 2^63 to 2^64