2 272 321 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

No factors below 2⁷⁰

TF target 2⁶²

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

P-1

B1 =	9700000
B2 =	49940763180

ECM

Digits	B1	Curves
25	50000	206 / 280

Estimated T-Level: 23.7 ⓘ

Status	Date	User	Residue	Shift
Verified		Wayne Scott	332B279501DA2BD1	0
Bad	1999-03-15	Scott H.	262E42EA33D3E6EC	631496
Verified	1999-07-27	Stephen Wood	332B279501DA2BD1	880424
Verified	2018-04-25	gunhed	332B279501DA2BD1	928702
Verified	2018-04-26	kkmrkkblmbrbk	332B279501DA2BD1	784383

History

Date	User	Type	Result
2024-04-05	TJAOI	NF	no factor from 2^69 to 2^70
2023-08-21	Sid & Andy	NF-PM1	B1=9700000, B2=49940763180
2023-07-09	Joss	NF-PM1	B1=1000000, B2=3799936140
2023-03-19	Joss	NF-PM1	B1=1000000, B2=1647746100
2022-11-24	Joss	NF-PM1	B1=1000000, B2=571651080
2021-10-12	Numberwang	NF-PM1	B1=660000, B2=19800000
2021-06-17	TJAOI	NF	no factor from 2^68 to 2^69
2019-04-29	TJAOI	NF	no factor from 2^67 to 2^68
2018-04-26	kkmrkkblmbrbk	C-LL	332B279501DA2BD1
2018-04-25	gunhed	C-LL	332B279501DA2BD1
2017-10-04	Joss	NF-PM1	B1=544320, B2=5443200, E=6
2017-01-15	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-03-05	Joss	NF-PM1	B1=272160, B2=4898880, E=6
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2015-10-31	ramgeis	NF	no factor from 2^65 to 2^66
2015-03-10	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-10	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-09-15	-Anonymous-	NF-PM1	B1=133246
2013-01-23	dbaugh	NF	no factor from 2^62 to 2^63
2012-05-06	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-01-02	markr	NF-PM1	B1=105000, B2=2152500, E=6
2010-11-13	Joss	NF-PM1	B1=30000
2010-11-06	Joss	NF-PM1	B1=15000
2009-01-17	Sturle Sunde	NF	no factor from 2^60 to 2^61

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