2 142 967 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
5338251154029094211162753	25	82.1	2020-07-07 20:57:24

ECM

Digits	B1	Curves
25	50000	95 / 280

Estimated T-Level: 21.7 ⓘ

TF below 2^67 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		george brunton	71DFFCA3BDDD7E7C	0
Verified (Factored)	1999-07-27	Paul Victor Novarese	71DFFCA3BDDD7E7C	1478047
Verified (Factored)	2018-04-07	kkmrkkblmbrbk	71DFFCA3BDDD7E7C	697477

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-07-10	mnd9	E07C03A378EC1227	1	263242	5	3
Verified	2020-07-15	James Heinrich	E07C03A378EC1227	1	1264590	5	3

History

Date	User	Type	Result
2020-07-15	James Heinrich	C-PRP	M2142967/5338251154029094211162753 : E07C03A378EC1227 PRP: Verified PRP without proof (not generated)
2020-07-10	mnd9	C-PRP	M2142967/5338251154029094211162753 : E07C03A378EC1227 PRP: Verified PRP without proof (not generated)
2020-07-07	GAN	F-ECM	Factor: 5338251154029094211162753 / (ECM curve 2, B1=50000, B2=5000000, Sigma=6268551650473696)
2019-04-15	TJAOI	NF	no factor from 2^67 to 2^68
2018-04-07	kkmrkkblmbrbk	C-LL	71DFFCA3BDDD7E7C
2017-11-03	mikr	NF-PM1	B1=2500000, B2=125000000, E=12
2017-04-27	Joss	NF-PM1	B1=422270, B2=4222700, E=6
2017-04-22	Joss	NF-PM1	B1=351892, B2=3518920, E=6
2016-11-12	Joss	NF-PM1	B1=211135
2016-10-29	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-06-05	Joss	NF-PM1	B1=175946, B2=5265000, E=6
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-12-27	ramgeis	NF	no factor from 2^65 to 2^66
2015-03-18	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-18	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-10-28	Joss	NF-PM1	B1=159951
2013-09-07	ramgeis	NF	no factor from 2^62 to 2^63
2011-01-24	James Heinrich	NF-PM1	B1=130000, B2=2632500, E=6
2011-01-13	Joss	NF-PM1	B1=50000
2010-12-30	Joss	NF-PM1	B1=30000
2010-11-02	-Anonymous-	NF-PM1	B1=20000
2009-01-07	Sturle Sunde	NF	no factor from 2^61 to 2^62
2009-01-04	Sturle Sunde	NF	no factor from 2^60 to 2^61

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