2 166 833 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
9900464810512841119903	22	73.1	2020-07-14 19:05:09

ECM

Digits	B1	Curves
25	50000	96 / 280

Estimated T-Level: 21.7 ⓘ

TF below 2^67 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1997-12-09	Mikko Tommila	8E0D817C88DA4E52	0
Verified (Factored)	1999-01-29	Martijn Otto	8E0D817C88DA4E52	1030720
Verified (Factored)	2018-04-11	kkmrkkblmbrbk	8E0D817C88DA4E52	302626

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-07-15	Kirill Frolov	7D43938333E79D21	1	1742999	5	3
Verified	2020-07-17	Sébastien BROUCKE	7D43938333E79D21	1	88585	5	3

History

Date	User	Type	Result
2020-07-17	Sébastien BROUCKE	C-PRP	M2166833/9900464810512841119903 : 7D43938333E79D21 PRP: Verified PRP without proof (not generated)
2020-07-15	Kirill Frolov	C-PRP	M2166833/9900464810512841119903 : 7D43938333E79D21 PRP: Verified PRP without proof (not generated)
2020-07-14	mnd9	F-ECM	Factor: 9900464810512841119903 / (ECM curve 3, B1=50000, B2=5000000, Sigma=1977356728851073)
2019-05-06	TJAOI	NF	no factor from 2^67 to 2^68
2018-04-11	kkmrkkblmbrbk	C-LL	8E0D817C88DA4E52
2018-01-10	mikr	NF-PM1	B1=2500000, B2=125000000, E=12
2017-09-05	Joss	NF-PM1	B1=448862, B2=4488620, E=6
2016-11-10	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-03-05	Joss	NF-PM1	B1=224431, B2=4039758, 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=149621
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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