2 083 889 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
346700259706747629050287	24	78.2	2021-02-10 20:59:36

ECM

Digits	B1	Curves
25	50000	172 / 280

Estimated T-Level: 23.1 ⓘ

TF below 2^72 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1997-12-30	Fumitaka Hayashi	5618E2F87270989F	0
Verified (Factored)	1999-01-29	Paul Victor Novarese	5618E2F87270989F	856376
Verified (Factored)	2017-06-09	kkmrkkblmbrbk	5618E2F87270989F	1327092

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-02-11	SRJ2877	08E639384474AD7C	1	1149990	5	3

History

Date	User	Type	Result
2021-07-22	VikkiMtF	F-ECM	Factor: 346700259706747629050287 / (ECM curve 14, B1=50000, B2=5000000, Sigma=2296819780804038)
2021-02-11	Ben Delo	CERT	PRP Certification Proof certified good
2021-02-11	SRJ2877	C-PRP	M2083889/346700259706747629050287 : 08E639384474AD7C PRP proof power = 7 PRP: Verified Proof certified good
2021-02-10	Zenzoma	F-ECM	Factor: 346700259706747629050287 / (ECM curve 3, B1=50000, B2=5000000, Sigma=5750807819725022)
2019-04-01	chuenkit	NF	no factor from 2^67 to 2^68
2017-06-09	kkmrkkblmbrbk	C-LL	5618E2F87270989F
2017-05-13	Joss	NF-PM1	B1=364760, B2=3647600, E=6
2017-04-09	mikr	NF-PM1	B1=2500000, B2=125000000, E=12
2016-11-06	Joss	NF-PM1	B1=262627
2016-11-04	Joss	NF-PM1	B1=218856
2016-09-18	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-07-06	Joss	NF-PM1	B1=182380, B2=5872500, E=12
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-11-05	ramgeis	NF	no factor from 2^65 to 2^66
2015-03-31	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-31	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-09-03	ramgeis	NF	no factor from 2^62 to 2^63
2012-03-17	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-01-24	James Heinrich	NF-PM1	B1=135000, B2=2936250, E=6
2011-01-07	Joss	NF-PM1	B1=50000
2010-12-28	Joss	NF-PM1	B1=30000
2009-07-26	USAFSS	NF-PM1	B1=20000, B2=260000
2009-01-02	Sturle Sunde	NF	no factor from 2^60 to 2^61

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