3 220 051 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
181006360011472861815939841	27	87.2	2020-12-25 01:39:26

ECM

Digits	B1	Curves
25	50000	18 / 280

Estimated T-Level: 20.3 ⓘ

TF below 2^63 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Darren Smith	B4A69FA23F937676	0
Verified (Factored)	1999-09-07	Frank Fullum	B4A69FA23F937676	1011244
Verified (Factored)	2000-03-22	Milton Forté II	B4A69FA23F937676	1035674

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-12-26	Niels_Mache_Nextcloud	1D015F683D28C3C7	1	2721919	5	3

History

Date	User	Type	Result
2022-09-03	Joss	NF-PM1	B1=1264321, B2=223284600
2022-01-06	Joss	NF-PM1	B1=1264321, B2=116447100
2021-12-11	Joss	NF	no factor from 2^68 to 2^69
2021-02-22	Joss	NF	no factor from 2^66 to 2^67
2021-02-21	Joss	NF	no factor from 2^65 to 2^66
2021-01-17	Joss	NF-PM1	B1=381315, B2=3220051, E=6
2020-12-26	curtisc	CERT	PRP Certification Proof certified good
2020-12-26	Niels_Mache_Nextcloud	C-PRP	M3220051/181006360011472861815939841 : 1D015F683D28C3C7 PRP proof power = 7 PRP: Verified Proof certified good
2020-12-25	Zenzoma	F-ECM	Factor: 181006360011472861815939841 / (ECM curve 3, B1=50000, B2=5000000, Sigma=48098663130359)
2020-03-02	mikr	NF-PM1	B1=4000000, B2=150000000, E=12
2018-12-24	TJAOI	NF	no factor from 2^67 to 2^68
2017-03-19	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-05-15	Joss	NF-PM1	B1=351315, B2=6323670, E=6
2015-12-14	Squeeky_Squirrel	NF-PM1	B1=155000, B2=3952500, E=6
2015-06-24	Tha	NF	no factor from 2^65 to 2^66
2015-02-15	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-15	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-09-29	Joss	NF-PM1	B1=99866
2014-06-03	Joss	NF-PM1	B1=79933
2013-01-03	dbaugh	NF	no factor from 2^62 to 2^63
2011-10-22	markr	NF	no factor from 2^61 to 2^62
2011-09-04	USAFSS	NF-PM1	B1=60000, B2=1035000, E=6
2009-07-03	Carsten Kossendey	NF-PM1	B1=15000, B2=191250
2009-04-05	S485122	NF	no factor from 2^60 to 2^61

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