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
14717Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
256718638571134.6old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001261 / 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 Kruse9F70F5DEF1EC3D1D1013
Verified2017-10-12kkmrkkblmbrbk9F70F5DEF1EC3D1D11029413
Verified2020-04-17Oliver Kruse6DFFECF05548D6D511017553
Verified2024-07-01kkmrkkblmbrbk6DFFECF05548D6D511112253
History
DateUserTypeResult
2024-07-01kkmrkkblmbrbkC-PRP
M14717/25671863857 : 6DFFECF05548D6D5
PRP: Verified
PRP without proof (small exponent)
2024-03-07-Anonymous-NF-PM1
B1=100000000000, B2=122154521813133810
2023-05-26JacobZNF-PM1
B1=7400000000, B2=32522539163164050
2021-08-01ViliamFNF-PM1
B1=250000000, B2=42750000000
2020-04-17Oliver KruseC-PRP
M14717/25671863857 : 6DFFECF05548D6D5
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M14717/25671863857 : 9F70F5DEF1EC3D1D
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M14717/25671863857 : 9F70F5DEF1EC3D1D
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M14717/25671863857 : 9F70F5DEF1EC3D1D
PRP without proof (not generated)