2 699 009 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

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

Factored

Factor	Digits	Bits	Date
1781249193546155360165469329	28	90.5	2022-11-01 04:05:25

ECM

Digits	B1	Curves
25	50000	154 / 280

Estimated T-Level: 22.8 ⓘ

TF below 2^71 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1998-03-17	Frits van den Akker	37F6581B523D8F41	0
Verified (Factored)	1999-04-13	Andrew Haveland-Robinson	37F6581B523D8F41	1293255
Verified (Factored)	2018-07-31	kkmrkkblmbrbk	37F6581B523D8F41	2586492

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2022-11-01	Kevin_9611	8C44C1C84925A09D	1	702663	5	3

History

Date	User	Type	Result
2022-11-01	curtisc	CERT	PRP Certification Proof certified good
2022-11-01	Kevin_9611	C-PRP	M2699009/1781249193546155360165469329 : 8C44C1C84925A09D PRP proof power = 7 PRP: Verified Proof certified good
2022-11-01	Nesowa	F-ECM	Factor: 1781249193546155360165469329 / (ECM curve 7, B1=50000, B2=38914785, Sigma=1728183425482324)
2021-06-28	TJAOI	NF	no factor from 2^68 to 2^69
2019-11-16	masser	NF-PM1	B1=2000000, B2=50000000, E=12
2019-02-25	TJAOI	NF	no factor from 2^67 to 2^68
2018-07-31	kkmrkkblmbrbk	C-LL	37F6581B523D8F41
2018-07-20	Joss	NF-PM1	B1=600000, B2=6000000, E=6
2017-09-15	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2016-01-28	ramgeis	NF	no factor from 2^65 to 2^66
2015-02-23	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-23	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-10	dbaugh	NF	no factor from 2^62 to 2^63
2012-04-27	markr	NF	no factor from 2^61 to 2^62
2011-03-12	James Heinrich	NF-PM1	B1=300000, B2=8000000, E=12
2011-01-15	Joss	NF-PM1	B1=50000
2010-12-26	Joss	NF-PM1	B1=30000
2010-12-16	Joss	NF-PM1	B1=20000
2009-01-30	Sturle Sunde	NF	no factor from 2^60 to 2^61

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