Marin Mersenne 2^P-1
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MnStatusDetails
2399387Factored
FactorDigitsBitsDate
8920054524858960320494312479.62021-01-08 09:47:24
ECM
DigitsB1Curves
2550000113 / 280
Estimated T-Level: 22.0 ⓘ
TF below 2^68 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Alex and Nick MyrmanA2A20
Verified (Factored)1998-06-07jackDD281F076C3BA2A20
Verified (Factored)1998-06-07Tom CageDD281F076C3BA2A20
Verified (Factored)2015-11-15MadPooDD281F076C3BA2A2592461
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-01-09ViliamFE5D4D56490DEAD8E152711853
Verified2021-01-09kutensE5D4D56490DEAD8E1106269553
History
DateUserTypeResult
2021-01-09osa16CERT
PRP Certification
Proof certified good
2021-01-09kutensC-PRP
M2399387/892005452485896032049431 : E5D4D56490DEAD8E
PRP proof power = 7
PRP: Verified
Proof certified good
2021-01-09ViliamFC-PRP
M2399387/892005452485896032049431 : E5D4D56490DEAD8E
PRP: Verified
PRP without proof (not generated)
2021-01-08mnd9F-ECM
Factor: 892005452485896032049431 / (ECM curve 7, B1=50000, B2=5000000, Sigma=4030428642149436)
2019-02-25TJAOINF
no factor from 2^67 to 2^68
2017-06-27Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2015-12-18mikrNF-PM1
B1=3000000, B2=100000000, E=12
2015-11-15MadPooC-LL
DD281F076C3BA2A2
2015-11-05ramgeisNF
no factor from 2^65 to 2^66
2015-03-12VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-12VictordeHollanderNF
no factor from 2^63 to 2^64
2013-12-04Jerry HallettNF
no factor from 2^62 to 2^63
2012-06-02Sebastian HornbostelNF
no factor from 2^61 to 2^62
2009-01-15Sturle SundeNF
no factor from 2^60 to 2^61