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:





MnDetails
13259
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
33171896571031.6old
1657068406839867642812918763673097.12008-10-25 20:59:11
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001579 / 9201
Estimated T-Level: 40.9 ⓘ
TF below 2^131 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
No proof (small exponent)
2017-09-21Oliver Kruse566B9FE786392AD72013
Verified
No proof (small exponent)
2017-10-02kkmrkkblmbrbk566B9FE786392AD72013
Verified
No proof (small exponent)
2017-12-07ATH566B9FE786392AD72190213
Verified
No proof (small exponent)
2020-04-17Oliver KruseA8E53523B3E7EC172608953
Verified
No proof (small exponent)
2024-07-01kkmrkkblmbrbkA8E53523B3E7EC172612053
History
DateUserTypeResult
2025-03-07masserNF-PP1Start=188/61, B1=430000000, B2=429570000000
2025-02-01masserNF-PP1Start=2/7, B1=430000000, B2=429570000000
2025-01-29masserNF-PP1Start=6/5, B1=430000000, B2=429570000000
2024-07-01kkmrkkblmbrbkC-PRPM13259/165706840683986764281291876367/3317189657 : A8E53523B3E7EC17
2023-10-10-anonymous-NF-PM1B1=100000000000, B2=122154521813133810
2023-05-18JacobZNF-PM1B1=8300000000, B2=34023579430740900
2022-02-05JossNF-PM1B1=1000000, B2=3910366209750
2020-04-17Oliver KruseC-PRPM13259/3317189657/165706840683986764281291876367 : A8E53523B3E7EC17
2017-12-07ATHC-PRPM13259/3317189657/165706840683986764281291876367 : 566B9FE786392AD7
2017-10-02kkmrkkblmbrbkC-PRPM13259/3317189657/165706840683986764281291876367 : 566B9FE786392AD7
2017-09-21Oliver KruseC-PRPM13259/3317189657/165706840683986764281291876367 : 566B9FE786392AD7
2008-10-25Will EdgingtonF-ECMFactor: 165706840683986764281291876367