Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
6659Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
22621112468612078283523394534425367104954342137.4old
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 KruseC797A155CEEA33101013
Verified2017-10-02kkmrkkblmbrbkC797A155CEEA33101013
Verified2017-12-07ATHC797A155CEEA33101350213
Verified2020-04-17Oliver Kruse5E1C2A246D20AE311439453
Verified2024-02-03Wentao Huang5E1C2A246D20AE311482553
History
DateUserTypeResult
2024-02-03Wentao HuangC-PRP
M6659/226211124686120782835233945344253671049543 : 5E1C2A246D20AE31
PRP: Verified
PRP without proof (small exponent)
2023-08-11-Anonymous-NF-PM1
B1=37000000000, B2=148599418701633900
2020-04-17Oliver KruseC-PRP
M6659/226211124686120782835233945344253671049543 : 5E1C2A246D20AE31
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M6659/226211124686120782835233945344253671049543 : C797A155CEEA3310
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M6659/226211124686120782835233945344253671049543 : C797A155CEEA3310
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M6659/known_factors : C797A155CEEA3310
PRP without proof (not generated)