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
13259Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
33171896571031.6old
1657068406839867642812918763673097.12008-10-25 20:59:11
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001384 / 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 Kruse566B9FE786392AD72013
Verified2017-10-02kkmrkkblmbrbk566B9FE786392AD72013
Verified2017-12-07ATH566B9FE786392AD72190213
Verified2020-04-17Oliver KruseA8E53523B3E7EC172608953
Verified2024-07-01kkmrkkblmbrbkA8E53523B3E7EC172612053
History
DateUserTypeResult
2024-07-01kkmrkkblmbrbkC-PRP
M13259/165706840683986764281291876367/3317189657 : A8E53523B3E7EC17
PRP: Verified
PRP without proof (small exponent)
2023-10-10-Anonymous-NF-PM1
B1=100000000000, B2=122154521813133810
2023-05-18JacobZNF-PM1
B1=8300000000, B2=34023579430740900
2022-02-05JossNF-PM1
B1=1000000, B2=3910366209750
2020-04-17Oliver KruseC-PRP
M13259/3317189657/165706840683986764281291876367 : A8E53523B3E7EC17
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M13259/3317189657/165706840683986764281291876367 : 566B9FE786392AD7
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M13259/3317189657/165706840683986764281291876367 : 566B9FE786392AD7
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M13259/3317189657/165706840683986764281291876367 : 566B9FE786392AD7
PRP without proof (not generated)
2008-10-25Will EdgingtonF-ECM
Factor: 165706840683986764281291876367