Marin Mersenne 2^P-1
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MnStatusDetails
18956339Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
51809446570402219988572272.12021-11-05 23:34:17
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)2004-01-18Michel Weinachter8AEE5D4EC21BD3C78882968
Verified (Factored)2007-12-03Daniel A. Norton8AEE5D4EC21BD3C72398057
History
DateUserTypeResult
2025-06-19GregF
Factor: 5180944657040221998857 / TF: 72-73
2021-11-05-Anonymous-F
Factor: 5180944657040221998857 / TF: 72-73*
2021-10-08-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-12SRBaseNF
no factor from 2^70 to 2^71
2020-01-12lycornNF
no factor from 2^69 to 2^70
2017-09-21ramgeisNF
no factor from 2^68 to 2^69
2017-09-21ramgeisNF
no factor from 2^67 to 2^68
2014-07-29NesowaNF
no factor from 2^66 to 2^67