Marin Mersenne 2^P-1
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MnStatusDetails
8349587Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
7389387216106523481192169.32020-10-13 13:30:43
95036782399764991739112273.02020-10-13 13:30:43
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1999-10-29Clayton Smith44084018D800B6B1800203
Verified (Factored)2002-12-31Northwestern College44084018D800B6B18303250
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2020-10-13mrhB0B76DFD74F52BDF2584026853
P-1 factors
DateFactorB1B2
2020-10-137022635849247208802636445303757015894723409100000000
History
DateUserTypeResult
2025-03-14beepNF-PM1
B1=1750000, B2=6798611820
2020-10-13curtiscCERT
PRP Certification
Proof certified good
2020-10-13mrhC-PRP
M8349587/9503678239976499173911/738938721610652348119 : B0B76DFD74F52BDF
PRP proof power = 8
PRP: Verified
Proof certified good
2020-10-13mnd9F-PM1
Factor: 7022635849247208802636445303757015894723409 / (P-1, B1=10000000)
2019-12-16mnd9NF
no factor from 2^68 to 2^69
2018-01-26monstNF
no factor from 2^67 to 2^68
2015-12-28snme2pm1NF
no factor from 2^66 to 2^67
2015-05-28VictordeHollanderNF
no factor from 2^65 to 2^66
2014-12-02David CampeauNF
no factor from 2^64 to 2^65
2014-03-13lycornNF
no factor from 2^64 to 2^65
2012-08-10firejugglerNF-PM1
B1=95000, B2=1686250, E=6