2 165 857 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

No factors below 2⁶⁹

TF target 2⁶²

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

P-1

B1 =	5000000
B2 =	9896994030

ECM

Digits	B1	Curves
25	50000	206 / 280

Estimated T-Level: 23.7 ⓘ

Status	Date	User	Residue	Shift
Verified		Jeff Woods	DE073092C4A4C5B1	0
Verified	1999-01-29	Bruce Mitchell	DE073092C4A4C5B1	511254
Verified	2018-04-11	kkmrkkblmbrbk	DE073092C4A4C5B1	1372533

History

Date	User	Type	Result
2022-12-26	Architects Cubed	NF-PM1	B1=5000000, B2=9896994030
2021-07-15	TJAOI	NF	no factor from 2^68 to 2^69
2019-05-06	TJAOI	NF	no factor from 2^67 to 2^68
2018-04-11	kkmrkkblmbrbk	C-LL	DE073092C4A4C5B1
2018-01-06	mikr	NF-PM1	B1=2500000, B2=125000000, E=12
2017-09-05	Joss	NF-PM1	B1=448902, B2=4489020, E=6
2016-11-10	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-03-04	Joss	NF-PM1	B1=224451, B2=4040118, E=6
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-12-30	ramgeis	NF	no factor from 2^65 to 2^66
2015-03-25	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-25	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-10-05	Joss	NF-PM1	B1=149635
2013-09-08	ramgeis	NF	no factor from 2^62 to 2^63
2011-01-21	markr	NF-PM1	B1=120000, B2=2370000, E=6
2011-01-15	Joss	NF-PM1	B1=50000
2010-12-30	Joss	NF-PM1	B1=30000
2010-11-03	Joss	NF-PM1	B1=20000
2009-01-07	Sturle Sunde	NF	no factor from 2^61 to 2^62
2009-01-04	Sturle Sunde	NF	no factor from 2^60 to 2^61

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