2 852 813 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

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

Factored

Factor	Digits	Bits	Date
14033926552037888185993	23	73.6	2019-10-28 04:18:06

ECM

Digits	B1	Curves
25	50000	121 / 280

Estimated T-Level: 22.2 ⓘ

TF below 2^69 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1998-02-08	Ethan O'Connor	1D172B1E5449EAC2	0
Verified (Factored)	1999-05-09	Stephen Wood	1D172B1E5449EAC2	2426719
Verified (Factored)	2018-09-17	kkmrkkblmbrbk	1D172B1E5449EAC2	2734434

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-10-29	GAN	62FDE0B8C74A76A2	1	1829311	5	3
Verified	2019-10-30	arnaud	62FDE0B8C74A76A2	1	1724164	5	3

P-1 factors

Date	Factor	B1	B2
2019-10-28	14033926552037888185993	2860000	28600000

History

Date	User	Type	Result
2019-10-30	arnaud	C-PRP	M2852813/14033926552037888185993 : 62FDE0B8C74A76A2 PRP: Verified PRP without proof (not generated)
2019-10-29	GAN	C-PRP	M2852813/14033926552037888185993 : 62FDE0B8C74A76A2 PRP: Verified PRP without proof (not generated)
2019-10-28	masser	F-PM1	Factor: 14033926552037888185993 / (P-1, B1=2860000, B2=28600000, E=12)
2019-01-07	chuenkit	NF	no factor from 2^67 to 2^68
2018-09-17	kkmrkkblmbrbk	C-LL	1D172B1E5449EAC2
2018-08-30	Joss	NF-PM1	B1=868008, B2=2604024, E=6
2018-08-27	Joss	NF-PM1	B1=868008, B2=1736016, E=6
2018-01-24	Joss	NF-PM1	B1=673340
2017-11-12	Gordon Spence	NF	no factor from 2^66 to 2^67
2017-04-01	Joss	NF-PM1	B1=324721, B2=3247210, E=6
2017-01-10	Joss	NF-PM1	B1=225501
2016-12-19	Joss	NF-PM1	B1=187918
2016-08-23	Joss	NF-PM1	B1=156599, B2=4772500, E=6
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2016-02-16	ramgeis	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
2013-01-10	dbaugh	NF	no factor from 2^62 to 2^63
2012-01-30	markr	NF	no factor from 2^61 to 2^62
2011-02-08	markr	NF-PM1	B1=115000, B2=2386250, E=6
2011-01-26	Joss	NF-PM1	B1=50000
2011-01-03	Joss	NF-PM1	B1=30000
2010-12-22	Joss	NF-PM1	B1=20000
2009-07-03	Carsten Kossendey	NF-PM1	B1=15000, B2=157500
2009-02-13	Sturle Sunde	NF	no factor from 2^60 to 2^61

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