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
138808777Composite: proven not-prime with PRP test
TF
No factors below 277
TF target 277
P-1
B1 = 1171000
B2 = 1226374050
PRP
StatusDateUserResidueShiftTypeBase
Verified2025-09-15Mihai Preda4042CE2C89A300B4013
History
DateUserTypeResult
2025-09-15Georg_EdelmannCERT
PRP Certification
CERT proof power = 10
Proof certified good
2025-09-15Mihai PredaC-PRP
4042CE2C89A300B4
PRP proof power = 10
PRP: Verified
Proof certified good
2024-09-21Luke DurantNF-PM1
B1=1171000, B2=1226374050
2024-08-05Luke DurantNF
no factor from 2^76 to 2^77
2024-07-14SRBaseNF
no factor from 2^75 to 2^76
2023-01-15SRBaseNF
no factor from 2^74 to 2^75
2021-08-06SRBaseNF
no factor from 2^73 to 2^74
2020-10-23SRBaseNF
no factor from 2^72 to 2^73
2016-04-07GustavEbbersNF
no factor from 2^71 to 2^72
2016-04-04Choi4KANGNF
no factor from 2^70 to 2^71
2016-03-06La GüiraNF
no factor from 2^69 to 2^70
2016-03-06La GüiraNF
no factor from 2^68 to 2^69
2016-03-06La GüiraNF
no factor from 2^67 to 2^68
2015-02-01el groccoNF
no factor from 2^66 to 2^67
2012-11-19tscNF
no factor from 2^65 to 2^66
2010-12-06RichardNF
no factor from 2^64 to 2^65
2010-06-12carlos56NF
no factor from 2^63 to 2^64