Marin Mersenne 2^P-1
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MnStatusDetails
9992737Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
38822641523047208220729156072891.62022-04-20 23:51:08
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)2000-05-24Peter Olson987961A84818C3886152086
Verified (Factored)2003-09-29Ari Örn987961A84818C3888613977
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-04-28XZTE0F469887E6821001576762053
P-1 factors
DateFactorB1B2
2022-04-20388226415230472082207291560720000004219343700
History
DateUserTypeResult
2022-04-28Eric ClementsCERT
PRP Certification
Proof certified good
2022-04-28XZTC-PRP
M9992737/3882264152304720822072915607 : E0F469887E682100
PRP proof power = 8
PRP: Verified
Proof certified good
2022-04-20ThaF-PM1
Factor: 3882264152304720822072915607 / (P-1, B1=2000000, B2=4219343700)
2021-10-21SRBaseNF
no factor from 2^71 to 2^72
2021-08-11SRBaseNF
no factor from 2^70 to 2^71
2017-09-28YxinityNF
no factor from 2^69 to 2^70
2017-09-28YxinityNF
no factor from 2^68 to 2^69
2017-05-31snme2pm1NF
no factor from 2^67 to 2^68
2016-03-01caddrNF
no factor from 2^66 to 2^67
2014-10-19Denial140NF
no factor from 2^65 to 2^66
2013-05-03NesowaNF-PM1
B1=245000, B2=5512500, E=6
2012-07-15AxelssonNF
no factor from 2^64 to 2^65