Marin Mersenne 2^P-1
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MnStatusDetails
4866847Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
8520691590060643812419692479.52024-12-02 14:48:47
ECM
DigitsB1Curves
255000053 / 280
Estimated T-Level: 20.9 ⓘ
TF below 2^65 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1999-07-04Nathan Stohs880DFE97E02A6DDB3440500
Verified (Factored)2001-01-14Ing. Pavel PaJaSoft Janousek880DFE97E02A6DDB1530063
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2024-12-02JC_Herles34D218F93141A94D1402369153
History
DateUserTypeResult
2024-12-02PappyCERT
PRP Certification
Proof certified good
2024-12-02JC_HerlesC-PRP
M4866847/852069159006064381241969 : 34D218F93141A94D
PRP proof power = 7
PRP: Verified
Proof certified good
2024-12-02JC_HerlesF-ECM
Factor: 852069159006064381241969 / (ECM curve 23, B1=50000, B2=60054225, Edwards Sigma=2327896763993863)
2023-03-20Sid & AndyNF-PM1
B1=4100000, B2=10597329600
2020-12-06-Anonymous-NF
no factor from 2^71 to 2^72
2020-12-03-Anonymous-NF
no factor from 2^70 to 2^71
2020-09-19Dylan DelgadoNF-PM1
B1=2156135, B2=53903384, E=12
2018-08-02YxinityNF
no factor from 2^69 to 2^70
2018-08-02YxinityNF
no factor from 2^68 to 2^69
2018-05-08ramgeisNF
no factor from 2^67 to 2^68
2017-11-05YxinityNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^1 to 2^61
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2016-02-14Squeeky_SquirrelNF-PM1
B1=165000, B2=4166250, E=6
2015-07-21snme2pm1NF
no factor from 2^65 to 2^66
2015-01-09VictordeHollanderNF
no factor from 2^64 to 2^65
2015-01-09VictordeHollanderNF
no factor from 2^63 to 2^64
2011-09-28GrunwalderGIMPNF
no factor from 2^1 to 2^63
2011-07-17USAFSSNF-PM1
B1=60000, B2=945000, E=6
2010-04-24markrNF
no factor from 2^61 to 2^62