Marin Mersenne 2^P-1
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MnStatusDetails
2665669Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
2518369091537120255292167.82018-05-24 20:56:10
ECM
DigitsB1Curves
2550000124 / 280
Estimated T-Level: 22.2 ⓘ
TF below 2^69 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1998-04-11Kevin D. Quitt601D9723885D27910
Verified (Factored)1999-05-02Kent Lee601D9723885D279183634
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2018-05-24ATH67577C48CDABC310195195953
Verified2018-05-25kkmrkkblmbrbk67577C48CDABC310167016053
History
DateUserTypeResult
2019-07-04alpertronNF-PM1
B1=2000000, B2=60000000, E=12
2018-05-25kkmrkkblmbrbkC-PRP
M2665669/251836909153712025529 : 67577C48CDABC310
PRP: Verified
PRP without proof (not generated)
2018-05-24ATHC-PRP
M2665669/251836909153712025529 : 67577C48CDABC310
PRP: Verified
PRP without proof (not generated)
2018-05-24Chang Chia-TcheF-ECM
Factor: 251836909153712025529 / (ECM curve 2, B1=50000, B2=5000000)
2017-09-08Gordon SpenceNF
no factor from 2^66 to 2^67
2016-01-25ramgeisNF
no factor from 2^65 to 2^66
2015-02-23VictordeHollanderNF
no factor from 2^64 to 2^65
2015-02-23VictordeHollanderNF
no factor from 2^63 to 2^64
2013-11-06David CampeauNF-PM1
B1=1215000, B2=38880000, E=12
2013-01-23dbaughNF
no factor from 2^62 to 2^63