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
4457Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
1631263720.6old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
5511000000015680 / 40830
Estimated T-Level: 51.9
TF below 2^167 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver KruseFA6E9D0CC574B3931013
Verified2017-10-12kkmrkkblmbrbkFA6E9D0CC574B393198413
Verified2020-04-17Oliver Kruse42E3FE3A30E40BA81312053
Verified2024-02-03Wentao Huang42E3FE3A30E40BA8124453
History
DateUserTypeResult
2024-02-03Wentao HuangC-PRP
M4457/1631263 : 42E3FE3A30E40BA8
PRP: Verified
PRP without proof (small exponent)
2023-05-23-Anonymous-NF-PM1
B1=72000000000, B2=721841185927912050
2020-04-17Oliver KruseC-PRP
M4457/1631263 : 42E3FE3A30E40BA8
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M4457/1631263 : FA6E9D0CC574B393
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M4457/1631263 : FA6E9D0CC574B393
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M4457/1631263 : FA6E9D0CC574B393
PRP without proof (not generated)