2 646 797 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
3846670984601247228889	22	71.7	2021-11-12 07:46:59

ECM

Digits	B1	Curves
25	50000	126 / 280

Estimated T-Level: 22.3 ⓘ

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

Status	Date	User	Residue	Shift
Bad		Ron Whittle	5D71C0533F8AEA0A	0
Verified (Factored)	1999-09-14	Joe Kennedy	8FE22CF8F3FEAD81	1584038
Verified (Factored)	2000-03-08	Alexander Grässer	8FE22CF8F3FEAD81	68611
Verified (Factored)	2018-07-16	kkmrkkblmbrbk	8FE22CF8F3FEAD81	1808857

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-11-12	SRJ2877	317C826BE81DFD79	1	1527049	5	3

History

Date	User	Type	Result
2021-11-12	Miika Wallius	CERT	PRP Certification Proof certified good
2021-11-12	SRJ2877	C-PRP	M2646797/3846670984601247228889 : 317C826BE81DFD79 PRP proof power = 7 PRP: Verified Proof certified good
2021-11-12	daveward2005	F-ECM	Factor: 3846670984601247228889 / (ECM curve 1, B1=50000, B2=5000000)
2021-06-21	TJAOI	NF	no factor from 2^68 to 2^69
2019-11-28	masser	NF-PM1	B1=2000000, B2=50000000, E=12
2019-02-25	TJAOI	NF	no factor from 2^67 to 2^68
2018-07-16	kkmrkkblmbrbk	C-LL	8FE22CF8F3FEAD81
2017-09-08	Gordon Spence	NF	no factor from 2^66 to 2^67
2017-05-08	Joss	NF-PM1	B1=360000, B2=3600000, E=6
2016-12-29	Joss	NF-PM1	B1=206385
2016-12-27	Joss	NF-PM1	B1=171988
2016-02-23	Mark Rose	NF	no factor from 2^59 to 2^60
2016-01-21	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
2013-01-14	dbaugh	NF	no factor from 2^62 to 2^63
2012-06-09	Grant McCracken	NF	no factor from 2^61 to 2^62
2011-01-20	James Heinrich	NF-PM1	B1=180000, B2=4275000, E=6
2009-06-22	USAFSS	NF-PM1	B1=30000, B2=420000
2009-01-28	Sturle Sunde	NF	no factor from 2^60 to 2^61

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