Marin Mersenne 2^P-1
Username
Password
Forgot password?
Blue
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
4352947Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
19588261511030.9old
11769947479898120006448470172889.92023-04-21 00:50:39
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-09-20kkmrkkblmbrbk043DF022134C6F131013
Verified (Factored)2018-02-03Oliver Kruse043DF022134C6F131125295313
Verified2023-04-21retsu972C2414E816A6252191737753
Verified2023-04-23retsu972C2414E816A6252102276453
Verified2023-04-23USAFSS972C2414E816A6252155144753
P-1 factors
DateFactorB1B2
2023-04-211176994747989812000644847017448000448000
History
DateUserTypeResult
2023-04-23Will KCERT
PRP Certification
Proof certified good
2023-04-23USAFSSC-PRP
M4352947/1958826151/1176994747989812000644847017 : 972C2414E816A625
PRP proof power = 7
PRP: Verified
Proof certified good
2023-04-23retsuC-PRP
M4352947/1958826151/1176994747989812000644847017 : 972C2414E816A625
PRP: Verified
PRP without proof (not generated)
2023-04-21USAFSSNF-PM1
B1=448000, B2=251346810
2023-04-21retsuC-PRP
M4352947/1958826151/1176994747989812000644847017 : 972C2414E816A625
PRP: Verified
PRP without proof (not generated)
2023-04-21USAFSSF-PM1
Factor: 1176994747989812000644847017 / (P-1, B1=448000)
2018-02-03Oliver KruseC-PRP
M4352947/1958826151 : 043DF022134C6F13
PRP: Verified
PRP without proof (not generated)
2017-09-20kkmrkkblmbrbkC-PRP
M4352947/1958826151 : 043DF022134C6F13
PRP: Verified
PRP without proof (not generated)