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

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Exponent Range:










MnStatusDetails
13487Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
107897616.7old
718968204651473378663801772685.92008-10-25 20:59:11
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001333 / 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 Kruse3C6BE5B33C7DBC8B2013
Verified2017-10-12kkmrkkblmbrbk3C6BE5B33C7DBC8B2746013
Verified2020-04-17Oliver Kruse57F7FBD2EA0055652979253
Verified2024-07-01kkmrkkblmbrbk57F7FBD2EA00556521068453
History
DateUserTypeResult
2024-07-01kkmrkkblmbrbkC-PRP
M13487/107897/71896820465147337866380177 : 57F7FBD2EA005565
PRP: Verified
PRP without proof (small exponent)
2024-01-29-Anonymous-NF-PM1
B1=100000000000, B2=122154521813133810
2023-05-19JacobZNF-PM1
B1=8100000000, B2=31521845619113850
2022-02-05JossNF-PM1
B1=1000000, B2=2389799412000
2020-04-17Oliver KruseC-PRP
M13487/107897/71896820465147337866380177 : 57F7FBD2EA005565
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M13487/107897/71896820465147337866380177 : 3C6BE5B33C7DBC8B
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M13487/107897/71896820465147337866380177 : 3C6BE5B33C7DBC8B
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M13487/107897/71896820465147337866380177 : 3C6BE5B33C7DBC8B
PRP without proof (not generated)
2008-10-25Will EdgingtonF-ECM
Factor: 71896820465147337866380177