2 627 399 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

No factors below 2⁷⁰

TF target 2⁶³

TF below 2^74 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	20000000
B2 =	52083764040

ECM

Digits	B1	Curves
25	50000	214 / 280

Estimated T-Level: 23.8 ⓘ

Status	Date	User	Residue	Shift
Verified		John Crider	292AC7E832164DD9	0
Verified	1999-12-01	Lyushniak Sergey	292AC7E832164DD9	412930
Verified	2018-07-09	kkmrkkblmbrbk	292AC7E832164DD9	518408

History

Date	User	Type	Result
2024-03-22	TJAOI	NF	no factor from 2^69 to 2^70
2023-06-28	kurly	NF-PM1	B1=20000000, B2=52083764040
2023-05-16	Joss	NF-PM1	B1=1000000, B2=1726244520
2023-03-10	Joss	NF-PM1	B1=1000000, B2=457236780
2021-06-14	TJAOI	NF	no factor from 2^68 to 2^69
2019-10-21	masser	NF-PM1	B1=2630000, B2=26300000, E=12
2019-04-01	TJAOI	NF	no factor from 2^67 to 2^68
2018-07-20	mikr	NF-PM1	B1=8000000, B2=250000000, E=12
2018-07-09	kkmrkkblmbrbk	C-LL	292AC7E832164DD9
2017-09-01	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^59 to 2^60
2016-01-18	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
2012-06-12	markr	NF	no factor from 2^61 to 2^62
2011-02-27	James Heinrich	NF-PM1	B1=300000, B2=8000000, E=12
2011-01-19	Joss	NF-PM1	B1=50000
2010-12-26	Joss	NF-PM1	B1=30000
2010-12-21	Joss	NF-PM1	B1=20000
2009-02-13	Sturle Sunde	NF	no factor from 2^60 to 2^61

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