2 684 237 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

No factors below 2⁷⁰

TF target 2⁶³

TF below 2^75 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	20000000
B2 =	54443613840

ECM

Digits	B1	Curves
25	50000	232 / 280

Estimated T-Level: 24.1 ⓘ

Status	Date	User	Residue	Shift
Bad		Timo Aaltonen and friends	250586CC9F4FF974	0
Verified	1999-04-13	Alan Frederick	F2C1431E2BA0EFA3	1766007
Verified	1999-09-14	Simon Leung	F2C1431E2BA0EFA3	780928
Verified	2018-07-27	kkmrkkblmbrbk	F2C1431E2BA0EFA3	228354

History

Date	User	Type	Result
2024-01-19	TJAOI	NF	no factor from 2^69 to 2^70
2023-04-11	kurly	NF-PM1	B1=20000000, B2=54443613840
2023-03-10	Joss	NF-PM1	B1=1000000, B2=457236780
2021-07-26	TJAOI	NF	no factor from 2^68 to 2^69
2019-07-05	BigBrother	NF-PM1	B1=3000000, B2=90000000, E=12
2019-05-06	TJAOI	NF	no factor from 2^67 to 2^68
2018-09-03	Joss	NF-PM1	B1=486614
2018-07-27	kkmrkkblmbrbk	C-LL	F2C1431E2BA0EFA3
2017-09-13	Gordon Spence	NF	no factor from 2^66 to 2^67
2017-04-07	Joss	NF-PM1	B1=335512, B2=3355120, E=6
2017-01-10	Joss	NF-PM1	B1=232995
2016-12-19	Joss	NF-PM1	B1=194163
2016-06-15	Joss	NF-PM1	B1=161803, B2=4567500, E=6
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2016-01-26	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
2012-05-11	markr	NF	no factor from 2^61 to 2^62
2011-02-03	markr	NF-PM1	B1=105000, B2=2283750, E=6
2010-12-26	Joss	NF-PM1	B1=30000
2010-12-21	Joss	NF-PM1	B1=20000
2009-01-31	Sturle Sunde	NF	no factor from 2^60 to 2^61

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