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
6197Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
297457618.2old
2160176457838817691857.6old
187835708811763085009918925452931100.6old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001429 / 9201
Estimated T-Level: 40.8
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 KruseD59A5034E45AC2C53013
Verified2017-10-02kkmrkkblmbrbkD59A5034E45AC2C53013
Verified2017-12-07ATHD59A5034E45AC2C53525413
Verified2020-04-17Oliver Kruse360ED50C419F27AF355853
Verified2024-02-03Wentao Huang360ED50C419F27AF3136853
Assigned
AssignedUserWork TypeStage% DoneUpdatedExpired
2024-10-21Denial140factor ECM small0.00 % 2024-10-24
2024-10-21Denial140factor ECM small0.00 % 2024-10-24
2024-10-21Denial140factor ECM small0.00 % 2024-10-24
2024-10-21Denial140factor ECM small0.00 % 2024-10-24
2024-10-21Denial140factor ECM small0.00 % 2024-10-24
2024-10-21Denial140factor ECM small0.00 % 2024-10-24
History
DateUserTypeResult
2024-02-03Wentao HuangC-PRP
M6197/297457/216017645783881769/1878357088117630850099189254529 : 360ED50C419F27AF
PRP: Verified
PRP without proof (small exponent)
2023-07-30-Anonymous-NF-PM1
B1=40000000000, B2=169617550478676300
2021-07-10ViliamFNF-PM1
B1=1000000000, B2=201000000000
2020-04-17Oliver KruseC-PRP
M6197/297457/216017645783881769/1878357088117630850099189254529 : 360ED50C419F27AF
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M6197/297457/216017645783881769/1878357088117630850099189254529 : D59A5034E45AC2C5
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M6197/297457/216017645783881769/1878357088117630850099189254529 : D59A5034E45AC2C5
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M6197/known_factors : D59A5034E45AC2C5
PRP without proof (not generated)