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
6653Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
43057550711032.0old
39960879250311341.9old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001299 / 9201
Estimated T-Level: 40.7
TF below 2^130 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver Kruse6C3A105D8C15448D2013
Verified2017-10-12kkmrkkblmbrbk6C3A105D8C15448D2249013
Verified2020-04-17Oliver KruseF2DF95CC066BE9EE2540753
Verified2024-02-03Wentao HuangF2DF95CC066BE9EE2460853
History
DateUserTypeResult
2024-02-03Wentao HuangC-PRP
M6653/4305755071/3996087925031 : F2DF95CC066BE9EE
PRP: Verified
PRP without proof (small exponent)
2023-08-11-Anonymous-NF-PM1
B1=37000000000, B2=148599418701633900
2021-12-17Oliver KruseNF-PM1
B1=1000000000, B2=1003954060639530
2020-04-17Oliver KruseC-PRP
M6653/4305755071/3996087925031 : F2DF95CC066BE9EE
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M6653/4305755071/3996087925031 : 6C3A105D8C15448D
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M6653/4305755071/3996087925031 : 6C3A105D8C15448D
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M6653/4305755071/3996087925031 : 6C3A105D8C15448D
PRP without proof (not generated)