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
11631409Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
2667008866124944191432167.9old
LL
StatusDateUserResidueShift
Verified (Factored)2001-04-08Mason Guy80C41C43D16356719905431
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-09-25LaurVF81927755A2B6AD31262335953
History
DateUserTypeResult
2025-06-10yuriy_5-1NF
no factor from 2^70 to 2^71
2025-05-05yuriy_5-1NF
no factor from 2^69 to 2^70
2025-03-31yuriy_5-1NF
no factor from 2^68 to 2^69
2025-03-11yuriy_5-1NF-PM1
B1=6978840, B2=448598700
2024-08-21yuriy_5-1NF-PM1
B1=2800000, B2=5818231650
2021-09-25schweigmonCERT
PRP Certification
Proof certified good
2021-09-25LaurVC-PRP
M11631409/266700886612494419143 : F81927755A2B6AD3
PRP proof power = 8
PRP: Verified
Proof certified good