Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
11471Composite, with 4 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
22943514.5old
144075761927.12008-08-26 19:58:35
481266493271135.52008-08-26 19:58:35
1012763528387455705457021119513096.42009-07-13 06:03:52
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001290 / 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 Kruse229B0F20503EC5FC4013
Verified2017-10-02kkmrkkblmbrbk229B0F20503EC5FC4013
Verified2017-12-07ATH229B0F20503EC5FC4641213
Verified2020-04-17Oliver KruseEBABE879DA7150044482053
Verified (Factored)2022-05-12Jorge CoveiroEBABE879DA7150041700153
Verified2024-07-01kkmrkkblmbrbkEBABE879DA7150044989153
P-1 factors
DateFactorB1B2
2023-01-20101276352838745570545702111951100000000000122192573512709696
History
DateUserTypeResult
2024-07-01kkmrkkblmbrbkC-PRP
M11471/101276352838745570545702111951/144075761/22943/48126649327 : EBABE879DA715004
PRP: Verified
PRP without proof (small exponent)
2023-01-20-Anonymous-F-PM1
Factor: 101276352838745570545702111951 / (P-1, B1=100000000000, B2=122192573512709700)
2022-05-12Jorge CoveiroC-PRP
M11471/22943 : EBABE879DA715004
PRP: Verified
PRP without proof (small exponent)
2020-04-17Oliver KruseC-PRP
M11471/22943/144075761/48126649327/101276352838745570545702111951 : EBABE879DA715004
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M11471/22943/144075761/48126649327/101276352838745570545702111951 : 229B0F20503EC5FC
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M11471/22943/144075761/48126649327/101276352838745570545702111951 : 229B0F20503EC5FC
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M11471/22943/144075761/48126649327/101276352838745570545702111951 : 229B0F20503EC5FC
PRP without proof (not generated)
2016-09-07kkmrkkblmbrbkNF-PM1
B1=100000000, B2=10000000000, E=12
2009-07-13Rob_DeeF-ECM
Factor: 101276352838745570545702111951
2008-08-26-Anonymous-F
Factor: 48126649327
2008-08-26-Anonymous-F
Factor: 144075761