2 874 941 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
68373249400249906485391	23	75.9	2021-04-20 22:40:20

ECM

Digits	B1	Curves
25	50000	79 / 280

Estimated T-Level: 21.4 ⓘ

TF below 2^66 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1998-06-01	Terry Snyder	526D3118FD231296	0
Verified (Factored)	1999-07-27	Michelle Jarrett	526D3118FD231296	1585157
Verified (Factored)	2018-09-22	kkmrkkblmbrbk	526D3118FD231296	1048011

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-04-24	Klaus Nordmann	76E28806BE638F91	1	2444332	5	3
Verified	2021-04-30	Kirill Frolov	76E28806BE638F91	1	82595	5	3

History

Date	User	Type	Result
2021-04-30	curtisc	CERT	PRP Certification Proof certified good
2021-04-30	Kirill Frolov	C-PRP	M2874941/68373249400249906485391 : 76E28806BE638F91 PRP proof power = 7 PRP: Verified Proof certified good
2021-04-24	Klaus Nordmann	C-PRP	M2874941/68373249400249906485391 : 76E28806BE638F91 PRP proof power = 7 PRP: Verified PRP proof never uploaded
2021-04-20	mnd9	F-ECM	Factor: 68373249400249906485391 / (ECM curve 6, B1=50000, B2=5000000, Sigma=3168991564766281)
2020-03-03	masser	NF-PM1	B1=5000000, B2=200000000, E=12
2019-10-23	masser	NF-PM1	B1=2880000, B2=28800000, E=12
2019-01-09	chuenkit	NF	no factor from 2^67 to 2^68
2018-09-22	kkmrkkblmbrbk	C-LL	526D3118FD231296
2018-09-12	Joss	NF-PM1	B1=739990, B2=3699950
2018-09-05	Joss	NF-PM1	B1=739990, B2=2219970, E=4
2018-09-03	Joss	NF-PM1	B1=739990, B2=1479980, E=6
2018-01-22	Joss	NF-PM1	B1=574992
2017-11-12	Gordon Spence	NF	no factor from 2^66 to 2^67
2017-04-12	Joss	NF-PM1	B1=332750, B2=3327500, E=6
2016-12-20	Joss	NF-PM1	B1=199650
2016-09-16	Joss	NF-PM1	B1=166375, B2=3093750, E=6
2016-02-23	Mark Rose	NF	no factor from 2^59 to 2^60
2016-02-19	Yxinity	NF	no factor from 2^65 to 2^66
2015-04-21	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-04-21	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-07	dbaugh	NF	no factor from 2^62 to 2^63
2012-01-22	markr	NF	no factor from 2^61 to 2^62
2011-02-07	markr	NF-PM1	B1=125000, B2=2812500, E=6
2011-01-22	Joss	NF-PM1	B1=50000
2010-12-23	Joss	NF-PM1	B1=20000
2009-07-03	Carsten Kossendey	NF-PM1	B1=15000, B2=161250
2009-02-12	Sturle Sunde	NF	no factor from 2^60 to 2^61

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