Marin Mersenne 2^P-1
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MnStatusDetails
2389529Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
213168997721679544806611032684.12022-04-26 07:44:06
ECM
DigitsB1Curves
2550000166 / 280
Estimated T-Level: 23.0 ⓘ
TF below 2^71 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Herb Savage4F46CA2F9BD26F410
Verified (Factored)1999-08-31arnaud4F46CA2F9BD26F41541302
Verified (Factored)2018-05-16kkmrkkblmbrbk4F46CA2F9BD26F411869507
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-04-26aperson18FB0BED902DD7BFB1232682053
History
DateUserTypeResult
2022-04-26curtiscCERT
PRP Certification
Proof certified good
2022-04-26aperson1C-PRP
M2389529/21316899772167954480661103 : 8FB0BED902DD7BFB
PRP proof power = 7
PRP: Verified
Proof certified good
2022-04-26mikrF-ECM
Factor: 21316899772167954480661103 / (ECM curve 1, B1=50000, B2=6900000, Sigma=3133085606724159)
2021-06-17TJAOINF
no factor from 2^68 to 2^69
2019-03-11TJAOINF
no factor from 2^67 to 2^68
2018-05-16kkmrkkblmbrbkC-LL
4F46CA2F9BD26F41
2017-06-23Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2015-11-18mikrNF-PM1
B1=3000000, B2=100000000, E=12
2015-11-02ramgeisNF
no factor from 2^65 to 2^66
2015-03-10VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-10VictordeHollanderNF
no factor from 2^63 to 2^64
2014-09-15-Anonymous-NF-PM1
B1=126861
2013-12-04Jerry HallettNF
no factor from 2^62 to 2^63
2012-06-01Sebastian HornbostelNF
no factor from 2^61 to 2^62
2010-12-25markrNF-PM1
B1=100000, B2=2075000, E=6
2010-11-15JossNF-PM1
B1=20000
2010-11-08JossNF-PM1
B1=15000
2009-01-15Sturle SundeNF
no factor from 2^60 to 2^61