Marin Mersenne 2^P-1
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MnStatusDetails
18726203Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
2478375328821043120764312477.72019-04-01 23:07:35
ECM
DigitsB1Curves
25500001 / 280
Estimated T-Level: 20.0 ⓘ
TF below 2^61 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2003-08-25Niclas BorlinDE849D84F155BD1F15107888
Verified (Factored)2007-02-05Ars Technica Team Prime RibDE849D84F155BD1F644834
History
DateUserTypeResult
2019-04-01krackerF-ECM
Factor: 247837532882104312076431 / (ECM curve 1, B1=50000, B2=5000000, Sigma=7341290966130808)
2018-01-25ramgeisNF
no factor from 2^68 to 2^69
2018-01-25ramgeisNF
no factor from 2^67 to 2^68
2014-08-05NesowaNF
no factor from 2^66 to 2^67