Marin Mersenne 2^P-1
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MnStatusDetails
11383987Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
131969485764898943618812373.52017-06-03 06:07:09
ECM
DigitsB1Curves
25500002 / 280
Estimated T-Level: 20.0 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2001-01-14Dieter Schmitt44B65990CC9775F53078590
Verified (Factored)2005-01-10Daniel Swanson44B65990CC9775F53063306
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-07-20Massimo Cappelli (ik5pwa)5150291569A285B5162017353
History
DateUserTypeResult
2021-07-20MARK_DANA_ROCKMANCERT
PRP Certification
Proof certified good
2021-07-20Massimo Cappelli (ik5pwa)C-PRP
M11383987/13196948576489894361881 : 5150291569A285B5
PRP proof power = 8
PRP: Verified
Proof certified good
2017-06-03Sergey NosovF-ECM
Factor: 13196948576489894361881 / (ECM curve 1, B1=50000, B2=5000000)
2016-01-04VictordeHollanderNF
no factor from 2^66 to 2^67
2015-05-05NesowaNF
no factor from 2^65 to 2^66
2013-11-18lycornNF
no factor from 2^64 to 2^65