1 813 321 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
55811178719551590553720951	26	85.5	2020-08-13 15:47:56

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	107 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Ken Kiefer	9CB19E780B72656E	0
Verified (Factored)	1998-12-21	John C. Choi	9CB19E780B72656E	469954
Verified (Factored)	2015-07-10	MadPoo	9CB19E780B72656E	1120866

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-08-16	fre_games	5D6CE82D665F5CA4	1	488177	5	3
Verified	2020-08-16	atrench	5D6CE82D665F5CA4	1	560928	5	3
Verified	2020-08-17	kutens	5D6CE82D665F5CA4	1	635931	5	3

History

Date	User	Type	Result
2020-08-17	kutens	C-PRP	M1813321/55811178719551590553720951 : 5D6CE82D665F5CA4 PRP: Verified PRP without proof (not generated)
2020-08-16	atrench	C-PRP	M1813321/55811178719551590553720951 : 5D6CE82D665F5CA4 PRP: Verified PRP without proof (not generated)
2020-08-16	fre_games	C-PRP	M1813321/55811178719551590553720951 : 5D6CE82D665F5CA4 PRP: Verified PRP without proof (not generated)
2020-08-13	daveward2005	F-ECM	Factor: 55811178719551590553720951 / (ECM curve 2, B1=50000, B2=5000000)
2019-07-01	TJAOI	NF	no factor from 2^67 to 2^68
2018-09-21	Joss	NF-PM1	B1=1813321, B2=181332100, E=12
2018-04-02	TJAOI	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2016-02-23	Mark Rose	NF	no factor from 2^61 to 2^62
2015-09-02	ramgeis	NF	no factor from 2^65 to 2^66
2015-07-10	MadPoo	C-LL	9CB19E780B72656E
2015-05-19	mikr	NF-PM1	B1=2780000, B2=91760000, E=12
2015-04-22	snme2pm1	NF	no factor from 2^64 to 2^65
2015-04-22	snme2pm1	NF	no factor from 2^63 to 2^64
2014-09-20	Joss	NF-PM1	B1=170792
2014-05-13	Joss	NF-PM1	B1=135396
2011-02-07	Carsten Kossendey	NF-PM1	B1=100000, B2=1650000, E=6
2011-01-21	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-04-17	Architects Cubed	NF	no factor from 2^60 to 2^61

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