2 542 913 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
4181909840883774465563248441	28	91.8	2021-07-09 16:25:23

ECM

Digits	B1	Curves
25	50000	124 / 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)		Thomas Honold	6F230284845A3EFB	0
Verified (Factored)	1999-04-23	Jon Fournie	6F230284845A3EFB	1430892
Verified (Factored)	2018-06-10	kkmrkkblmbrbk	6F230284845A3EFB	1484084

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-07-10	kutens	A850A68D7A05BD3C	1	48495	5	3

History

Date	User	Type	Result
2021-07-10	Ben Delo	CERT	PRP Certification Proof certified good
2021-07-10	kutens	C-PRP	M2542913/4181909840883774465563248441 : A850A68D7A05BD3C PRP proof power = 7 PRP: Verified Proof certified good
2021-07-09	kutens	F-ECM	Factor: 4181909840883774465563248441 / (ECM curve 1, B1=50000, B2=6750000, Sigma=6310915476541309)
2021-06-21	TJAOI	NF	no factor from 2^68 to 2^69
2019-04-08	TJAOI	NF	no factor from 2^67 to 2^68
2018-09-15	mikr	NF-PM1	B1=3000000, B2=135000000, E=12
2018-08-13	Joss	NF-PM1	B1=600000, B2=6000000, E=6
2018-06-10	kkmrkkblmbrbk	C-LL	6F230284845A3EFB
2017-08-08	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^59 to 2^60
2015-11-08	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
2013-11-10	lycorn	NF	no factor from 2^62 to 2^63
2012-06-15	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-02-28	James Heinrich	NF-PM1	B1=300000, B2=8000000, E=12
2011-01-07	Joss	NF-PM1	B1=50000
2011-01-02	Joss	NF-PM1	B1=30000
2010-12-19	Joss	NF-PM1	B1=20000
2009-01-31	Sturle Sunde	NF	no factor from 2^60 to 2^61

Username
Password