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
138782261Composite: proven not-prime with PRP test
TF
No factors below 277
TF target 277
P-1
B1 = 1181000
B2 = 1277133330
PRP
StatusDateUserResidueShiftTypeBase
Verified2025-09-13George Woltman8149846E6C98821A013
History
DateUserTypeResult
2025-09-13qprimeCERT
PRP Certification
CERT proof power = 10
Proof certified good
2025-09-13George WoltmanC-PRP
8149846E6C98821A
PRP proof power = 10
PRP: Verified
Proof certified good
2024-09-21Luke DurantNF-PM1
B1=1181000, B2=1277133330
2024-08-05Luke DurantNF
no factor from 2^76 to 2^77
2024-07-13SRBaseNF
no factor from 2^75 to 2^76
2023-01-15SRBaseNF
no factor from 2^74 to 2^75
2021-08-02SRBaseNF
no factor from 2^73 to 2^74
2020-11-23SRBaseNF
no factor from 2^72 to 2^73
2017-02-12SourceBinary.comNF
no factor from 2^71 to 2^72
2017-02-11SourceBinary.comNF
no factor from 2^70 to 2^71
2017-02-10proxy2222NF
no factor from 2^69 to 2^70
2017-02-10proxy2222NF
no factor from 2^68 to 2^69
2016-03-02dbaughNF
no factor from 2^67 to 2^68
2015-02-01el groccoNF
no factor from 2^66 to 2^67
2012-11-19sasaki3NF
no factor from 2^65 to 2^66
2010-12-04AliNF
no factor from 2^64 to 2^65
2010-06-12Torchwood InstituteNF
no factor from 2^63 to 2^64