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
11969Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
287257618.1old
12711079823.62008-08-26 19:58:35
2808248637327992009447764732787.92008-10-25 20:59:11
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001282 / 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 Kruse00AC073C0084CE9D3013
Verified2017-10-02kkmrkkblmbrbk00AC073C0084CE9D3013
Verified2017-12-07ATH00AC073C0084CE9D3611713
Verified2020-04-17Oliver Kruse41DE68BE9E9DEBB23122053
Verified2024-07-01kkmrkkblmbrbk41DE68BE9E9DEBB23658853
History
DateUserTypeResult
2024-07-01kkmrkkblmbrbkC-PRP
M11969/12711079/280824863732799200944776473/287257 : 41DE68BE9E9DEBB2
PRP: Verified
PRP without proof (small exponent)
2023-04-06-Anonymous-NF-PM1
B1=100000000000, B2=122192573512709700
2020-04-17Oliver KruseC-PRP
M11969/287257/12711079/280824863732799200944776473 : 41DE68BE9E9DEBB2
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M11969/287257/12711079/280824863732799200944776473 : 00AC073C0084CE9D
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M11969/287257/12711079/280824863732799200944776473 : 00AC073C0084CE9D
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M11969/287257/12711079/280824863732799200944776473 : 00AC073C0084CE9D
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M11969/287257/12711079/280824863732799200944776473 : 00AC073C0084CE9D
PRP without proof (not generated)
2016-09-07kkmrkkblmbrbkNF-PM1
B1=100000000, B2=10000000000, E=12
2008-10-25Will EdgingtonF-ECM
Factor: 280824863732799200944776473
2008-08-26-Anonymous-F
Factor: 12711079