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
11601923Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
22275692171031.1old
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-09-13oodaira68AEE96229A468371784271153
History
DateUserTypeResult
2025-04-28yuriy_5-1NF-PM1
B1=7425216, B2=34178240250
2025-03-11yuriy_5-1NF-PM1
B1=6961152, B2=448721460
2025-02-10yuriy_5-1NF-PM1
B1=4640768, B2=594559020
2024-12-01yuriy_5-1NF
no factor from 2^71 to 2^72
2024-12-01yuriy_5-1NF
no factor from 2^70 to 2^71
2024-12-01yuriy_5-1NF
no factor from 2^69 to 2^70
2024-12-01yuriy_5-1NF
no factor from 2^68 to 2^69
2024-05-18yuriy_5-1NF-PM1
B1=1048576, B2=1083981030
2021-09-13Simon JosefssonCERT
PRP Certification
Proof certified good
2021-09-13oodairaC-PRP
M11601923/2227569217 : 68AEE96229A46837
PRP proof power = 8
PRP: Verified
Proof certified good