3 838 613 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
1686706195626621460586308801	28	90.4	2021-10-23 23:40:01

ECM

Digits	B1	Curves
25	50000	21 / 280

Estimated T-Level: 20.4 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)	1998-05-08	John E. Boon,Jr.	B6AF8A6507687D5D	0
Verified (Factored)	2000-06-11	Krzysztof Leszczynski	B6AF8A6507687D5D	296829

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-10-25	MarkS	0FE03C30D53576E0	1	1248358	5	3

History

Date	User	Type	Result
2022-05-24	Joss	NF-PM1	B1=100000, B2=130364850
2022-03-22	Joss	NF-PM1	B1=100000
2022-03-03	Joss	NF-PM1	B1=90000
2021-10-25	Ben Delo	CERT	PRP Certification Proof certified good
2021-10-25	MarkS	C-PRP	M3838613/1686706195626621460586308801 : 0FE03C30D53576E0 PRP proof power = 7 PRP: Verified Proof certified good
2021-10-23	MarkS	F-ECM	Factor: 1686706195626621460586308801 / (ECM curve 9, B1=50000, B2=5000000, Sigma=140558678030668)
2021-01-31	axn	NF-PM1	B1=15000000, B2=750000000
2020-11-22	Carlos Pinho	NF-PM1	B1=173000, B2=4667000, E=6
2020-09-07	TJAOI	NF	no factor from 2^68 to 2^69
2018-09-10	TJAOI	NF	no factor from 2^67 to 2^68
2016-11-21	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-24	omylist	NF	no factor from 2^65 to 2^66
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2016-02-03	Joss	NF-PM1	B1=239500, B2=2395000, E=6
2015-01-18	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-01-18	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-10-17	Joss	NF-PM1	B1=86721
2012-02-20	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2011-10-28	Squeeky_Squirrel	NF-PM1	B1=70000, B2=1137500, E=6
2011-03-04	markr	NF	no factor from 2^61 to 2^62
2009-07-27	Carsten Kossendey	NF-PM1	B1=20000, B2=270000
2009-02-27	S485122	NF	no factor from 2^60 to 2^61

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