2 280 463 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
489777554219708108832733207	27	88.7	2020-05-18 14:19:47

ECM

Digits	B1	Curves
25	50000	64 / 280

Estimated T-Level: 21.1 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)		Steve Buie	86F91F057E3D2F15	0
Verified (Factored)	1999-05-09	Doug.Thompson	86F91F057E3D2F15	574350
Verified (Factored)	2018-04-27	kkmrkkblmbrbk	86F91F057E3D2F15	1237036

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-05-19	mnd9	3EAB8DD4809D987C	1	1849436	5	3
Verified	2020-05-20	Luigi Morelli	3EAB8DD4809D987C	1	600736	5	3

History

Date	User	Type	Result
2023-01-28	USAFSS	NF-PM1	B1=288000, B2=308189700
2020-05-20	Luigi Morelli	C-PRP	M2280463/489777554219708108832733207 : 3EAB8DD4809D987C PRP: Verified PRP without proof (not generated)
2020-05-19	mnd9	C-PRP	M2280463/489777554219708108832733207 : 3EAB8DD4809D987C PRP: Verified PRP without proof (not generated)
2020-05-18	Keysarecool	F-ECM	Factor: 489777554219708108832733207 / (ECM curve 1, B1=50000, B2=5000000, Sigma=2385342903238147)
2019-09-09	Yxinity	NF	no factor from 2^67 to 2^68
2018-04-27	kkmrkkblmbrbk	C-LL	86F91F057E3D2F15
2017-02-13	Smok_bmv	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2016-01-23	Joss	NF-PM1	B1=519022, B2=5190220, E=6
2015-11-01	ramgeis	NF	no factor from 2^65 to 2^66
2015-03-12	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-12	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-10-06	Joss	NF-PM1	B1=141290
2014-06-11	Joss	NF-PM1	B1=113145
2013-01-23	dbaugh	NF	no factor from 2^62 to 2^63
2012-05-09	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-01-15	Oscar Östlin	NF-PM1	B1=85000, B2=1742500, E=6
2010-11-24	Oscar Östlin	NF-PM1	B1=75011
2010-11-14	Joss	NF-PM1	B1=20000
2010-11-07	Joss	NF-PM1	B1=15000
2009-01-15	Sturle Sunde	NF	no factor from 2^60 to 2^61

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