3 557 681 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
42902400108979200417241991348681	32	105.1	2021-08-29 03:24:53

ECM

Digits	B1	Curves
25	50000	34 / 280

Estimated T-Level: 20.6 ⓘ

TF below 2^63 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Joshua Cope	63DE574EC73E1B17	0
Verified (Factored)	1999-08-07	Sheldon Smith	63DE574EC73E1B17	2504970

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-08-31	SRJ2877	0E6DA4A10E924E34	1	2848293	5	3

History

Date	User	Type	Result
2022-09-07	Joss	NF-PM1	B1=1067304, B2=217278600
2022-04-08	Joss	NF-PM1	B1=1000000, B2=130318650
2021-08-31	James Heinrich	CERT	PRP Certification Proof certified good
2021-08-31	SRJ2877	C-PRP	M3557681/42902400108979200417241991348681 : 0E6DA4A10E924E34 PRP proof power = 7 PRP: Verified Proof certified good
2021-08-29	daveward2005	F-ECM	Factor: 42902400108979200417241991348681 / (ECM curve 5, B1=50000, B2=5000000, Sigma=5371223444998729)
2021-03-20	-Anonymous-	NF	no factor from 2^71 to 2^72
2021-03-17	-Anonymous-	NF	no factor from 2^70 to 2^71
2021-03-17	-Anonymous-	NF	no factor from 2^69 to 2^70
2021-01-26	axn	NF	no factor from 2^68 to 2^69
2019-02-04	TJAOI	NF	no factor from 2^67 to 2^68
2017-05-06	Joss	NF-PM1	B1=350000, B2=3500000, E=6
2017-01-16	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-03-03	ramgeis	NF	no factor from 2^65 to 2^66
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-12-24	Squeeky_Squirrel	NF-PM1	B1=175000, B2=4637500, E=6
2015-01-30	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-01-30	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-11-19	Joss	NF-PM1	B1=96082
2014-08-11	-Anonymous-	NF-PM1	B1=78041
2012-06-20	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2011-12-17	Squeeky_Squirrel	NF-PM1	B1=60000, B2=1005000, E=6
2011-06-23	Grant McCracken	NF	no factor from 2^61 to 2^62
2009-07-07	Carsten Kossendey	NF-PM1	B1=20000, B2=245000
2009-03-16	S485122	NF	no factor from 2^60 to 2^61

Username
Password