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
11620577Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
69723463826.1old
ECM
DigitsB1Curves
25500002 / 280
Estimated T-Level: 20.0
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2021-09-21Yizhe Huang29E0C0A807D0F1391626946353
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
2025-03-28yuriy_5-1NF
no factor from 2^68 to 2^69
2025-03-10yuriy_5-1NF-PM1
B1=6972342, B2=448721460
2025-02-10yuriy_5-1NF-PM1
B1=4648228, B2=600169020
2024-06-17yuriy_5-1NF-PM1
B1=262144, B2=137022600
2021-09-21Ben DeloCERT
PRP Certification
Proof certified good
2021-09-21Yizhe HuangC-PRP
M11620577/69723463 : 29E0C0A807D0F139
PRP proof power = 8
PRP: Verified
Proof certified good