2 680 241 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
3208200092868214522031	22	71.4	2020-09-02 06:19:58

ECM

Digits	B1	Curves
25	50000	46 / 280

Estimated T-Level: 20.8 ⓘ

TF below 2^64 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Michael Lee	1DBB4D952FE5D3C4	0
Verified (Factored)	1999-04-23	Carl Mikkelsen	1DBB4D952FE5D3C4	1346008
Verified (Factored)	2018-07-26	kkmrkkblmbrbk	1DBB4D952FE5D3C4	51218

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-09-03	jvang	A2B6EC1D29DF589B	1	734004	5	3

History

Date	User	Type	Result
2020-09-03	Ben Delo	CERT	PRP Certification Proof certified good
2020-09-03	jvang	C-PRP	M2680241/3208200092868214522031 : A2B6EC1D29DF589B PRP proof power = 7 PRP: Verified Proof certified good
2020-09-02	mnd9	F-ECM	Factor: 3208200092868214522031 / (ECM curve 1, B1=50000, B2=5000000, Sigma=864573504979754)
2019-11-16	masser	NF-PM1	B1=2000000, B2=50000000, E=12
2019-05-27	TJAOI	NF	no factor from 2^67 to 2^68
2018-08-29	Joss	NF-PM1	B1=907827, B2=3631308, E=6
2018-08-23	Joss	NF-PM1	B1=907827, B2=1815654, E=6
2018-07-26	kkmrkkblmbrbk	C-LL	1DBB4D952FE5D3C4
2018-02-20	Joss	NF-PM1	B1=377827
2017-09-13	Gordon Spence	NF	no factor from 2^66 to 2^67
2017-03-02	Joss	NF-PM1	B1=314856, B2=3148560, E=6
2016-12-29	Joss	NF-PM1	B1=218650
2016-12-16	Joss	NF-PM1	B1=182209
2016-06-14	Joss	NF-PM1	B1=151841, B2=4567500, E=6
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2016-01-25	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
2012-05-18	markr	NF	no factor from 2^61 to 2^62
2010-12-05	markr	NF-PM1	B1=105000, B2=2283750, E=6
2010-11-20	Joss	NF-PM1	B1=20000
2009-01-31	Sturle Sunde	NF	no factor from 2^60 to 2^61

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