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
202201Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
3235217721.6old
43675417825.42008-07-21 09:13:45
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000196 / 1566
Estimated T-Level: 30.6
TF below 2^97 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-22Oliver KruseDD8BBD952368E86B2013
Verified2017-10-12kkmrkkblmbrbkDD8BBD952368E86B217532413
Verified2020-04-17Oliver KruseEC0E9E62AF9F89C0219484153
Verified2023-08-03USAFSSEC0E9E62AF9F89C021468853
History
DateUserTypeResult
2023-08-03curtiscCERT
PRP Certification
Proof certified good
2023-08-03USAFSSC-PRP
M202201/3235217/43675417 : EC0E9E62AF9F89C0
PRP proof power = 5
PRP: Verified
Proof certified good
2022-02-04Oliver KruseNF-PM1
B1=30000000, B2=10264076402580
2021-05-04Oliver KruseNF-PM1
B1=30000000, B2=3000000000
2020-04-17Oliver KruseC-PRP
M202201/3235217/43675417 : EC0E9E62AF9F89C0
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M202201/3235217/43675417 : DD8BBD952368E86B
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M202201/3235217/43675417 : DD8BBD952368E86B
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M202201/3235217/43675417 : DD8BBD952368E86B
PRP without proof (not generated)
2008-07-21J FeitsmaF
Factor: 43675417