2 954 137 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 1 known prime factor. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
712145099593304880772463	24	79.2	2021-03-22 12:23:04

ECM

Digits	B1	Curves
25	50000	61 / 280

Estimated T-Level: 21.1 ⓘ

TF below 2^65 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Mikael Billberg	EED31C1196767F52	0
Verified (Factored)	1999-05-30	Paul Tice	EED31C1196767F52	437557
Verified (Factored)	2018-10-13	kkmrkkblmbrbk	EED31C1196767F52	1428590

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-03-23	Kriesel	A5CA29BFE0738B08	1	1516545	5	3

History

Date	User	Type	Result
2021-03-23	Chuck	CERT	PRP Certification Proof certified good
2021-03-23	Kriesel	C-PRP	M2954137/712145099593304880772463 : A5CA29BFE0738B08 PRP proof power = 7 PRP: Verified Proof certified good
2021-03-22	daveward2005	F-ECM	Factor: 712145099593304880772463 / (ECM curve 1, B1=50000, B2=5000000, Sigma=8170556804903701)
2018-12-24	chuenkit	NF	no factor from 2^67 to 2^68
2018-10-13	kkmrkkblmbrbk	C-LL	EED31C1196767F52
2017-11-28	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-09-05	Joss	NF-PM1	B1=1072681, B2=22000000, E=12
2016-02-26	ramgeis	NF	no factor from 2^65 to 2^66
2015-05-08	VictordeHollander	NF-PM1	B1=1000000, B2=20000000, E=12
2015-05-01	Joss	NF-PM1	B1=975165
2015-04-27	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-04-27	VictordeHollander	NF	no factor from 2^63 to 2^64
2015-04-08	Joss	NF-PM1	B1=805922
2015-03-29	Joss	NF-PM1	B1=732657
2015-03-14	Joss	NF-PM1	B1=605502
2015-03-12	Joss	NF-PM1	B1=550457
2015-03-02	Joss	NF-PM1	B1=500416
2015-02-25	Joss	NF-PM1	B1=454924
2015-02-04	Joss	NF-PM1	B1=413568
2015-02-01	Joss	NF-PM1	B1=187986
2015-01-31	Joss	NF-PM1	B1=170897
2015-01-26	Joss	NF-PM1	B1=141238
2014-11-12	Joss	NF-PM1	B1=116727
2013-01-07	dbaugh	NF	no factor from 2^62 to 2^63
2011-12-18	markr	NF	no factor from 2^61 to 2^62
2010-11-02	markr	NF-PM1	B1=95000, B2=1995000, E=6
2009-02-13	Sturle Sunde	NF	no factor from 2^60 to 2^61

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