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
7177Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
406895080798902600356462433532995.0old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000002306 / 9201
Estimated T-Level: 41.3
TF below 2^132 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver Kruse380A9688B378ADFE1013
Verified2017-10-12kkmrkkblmbrbk380A9688B378ADFE1110913
Verified2020-04-17Oliver KruseC8CA7CF3EA30691D1383553
Verified2024-02-03Wentao HuangC8CA7CF3EA30691D193653
History
DateUserTypeResult
2024-02-03Wentao HuangC-PRP
M7177/40689508079890260035646243353 : C8CA7CF3EA30691D
PRP: Verified
PRP without proof (small exponent)
2023-08-25-Anonymous-NF-PM1
B1=34000000000, B2=142096338314180250
2020-04-17Oliver KruseC-PRP
M7177/40689508079890260035646243353 : C8CA7CF3EA30691D
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M7177/40689508079890260035646243353 : 380A9688B378ADFE
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M7177/40689508079890260035646243353 : 380A9688B378ADFE
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M7177/40689508079890260035646243353 : 380A9688B378ADFE
PRP without proof (not generated)