2 793 941 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
201973484454182730947757135961	30	97.4	2020-12-11 13:54:11

ECM

Digits	B1	Curves
25	50000	58 / 280

Estimated T-Level: 21.0 ⓘ

TF below 2^65 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Mark Juenemann	F6799F4A263FFC04	0
Verified (Factored)	1999-05-02	David Rosoff	F6799F4A263FFC04	46917
Verified (Factored)	2018-08-30	kkmrkkblmbrbk	F6799F4A263FFC04	542572

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-12-12	Maciej Kmieciak	0CE9FC884938831A	1	1728809	5	3
Verified	2020-12-13	Kirill Frolov	0CE9FC884938831A	1	1965372	5	3

History

Date	User	Type	Result
2020-12-13	Nick Thorpe	CERT	PRP Certification Proof certified good
2020-12-13	Kirill Frolov	C-PRP	M2793941/201973484454182730947757135961 : 0CE9FC884938831A PRP proof power = 7 PRP: Verified Proof certified good
2020-12-12	Franklin Webber	CERT	PRP Certification Proof certified good
2020-12-12	Maciej Kmieciak	C-PRP	M2793941/201973484454182730947757135961 : 0CE9FC884938831A PRP proof power = 7 PRP: Verified Proof certified good
2020-12-11	daveward2005	F-ECM	Factor: 201973484454182730947757135961 / (ECM curve 4, B1=50000, B2=5000000, Sigma=8771848691887237)
2019-12-14	BigBrother	NF-PM1	B1=3000000, B2=90000000, E=12
2019-02-26	chuenkit	NF	no factor from 2^67 to 2^68
2018-08-30	kkmrkkblmbrbk	C-LL	F6799F4A263FFC04
2017-10-19	Gordon Spence	NF	no factor from 2^66 to 2^67
2017-07-30	Joss	NF-PM1	B1=400000, B2=4000000, E=6
2016-05-06	Joss	NF-PM1	B1=200000, B2=3600000, E=6
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2016-02-09	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
2014-11-03	Joss	NF-PM1	B1=122973
2013-01-14	dbaugh	NF	no factor from 2^62 to 2^63
2012-03-08	Grant McCracken	NF	no factor from 2^61 to 2^62
2010-11-22	markr	NF-PM1	B1=100000, B2=2075000, E=6
2010-11-14	Joss	NF-PM1	B1=15000
2009-02-12	Sturle Sunde	NF	no factor from 2^60 to 2^61

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