2 805 157 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 1 known prime factor. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
3943613505026811300313	22	71.7	2022-10-16 02:40:45

ECM

Digits	B1	Curves
25	50000	132 / 280

Estimated T-Level: 22.4 ⓘ

TF below 2^69 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Darin Gates	9D195DCE212F1619	0
Verified (Factored)	1999-04-23	Mark James	9D195DCE212F1619	761134
Verified (Factored)	2018-09-02	kkmrkkblmbrbk	9D195DCE212F1619	919729

PRP Cofactor

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2022-10-16	Kevin_9611	26A8625955127950	1	2334973	5	3

History

Date	User	Type	Result
2022-10-16	archwizard	CERT	PRP Certification Proof certified good
2022-10-16	Kevin_9611	C-PRP	M2805157/3943613505026811300313 : 26A8625955127950 PRP proof power = 7 PRP: Verified Proof certified good
2022-10-16	Sergey Nosov	F-ECM	Factor: 3943613505026811300313 / (ECM curve 2, B1=50000, B2=5000000)
2021-06-07	TJAOI	NF	no factor from 2^68 to 2^69
2020-01-04	masser	NF-PM1	B1=5000000, B2=200000000, E=12
2019-11-13	masser	NF-PM1	B1=3000000, B2=30000000, E=12
2018-12-30	chuenkit	NF	no factor from 2^67 to 2^68
2018-09-02	kkmrkkblmbrbk	C-LL	9D195DCE212F1619
2018-04-22	Joss	NF-PM1	B1=2805157, B2=5466648, E=6
2018-04-20	Joss	NF-PM1	B1=2633324
2017-10-24	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-08-04	Joss	NF-PM1	B1=1653324, B2=3306648, E=6
2016-05-08	Numberwang	NF-PM1	B1=15000, B2=135000
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2016-02-10	ramgeis	NF	no factor from 2^65 to 2^66
2015-07-07	Joss	NF-PM1	B1=1653324
2015-06-25	Joss	NF-PM1	B1=1503022
2015-06-08	Joss	NF-PM1	B1=1366384
2015-05-22	Joss	NF-PM1	B1=1242168
2015-05-07	Joss	NF-PM1	B1=1129244
2015-05-01	Joss	NF-PM1	B1=1026586
2015-04-21	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-04-21	VictordeHollander	NF	no factor from 2^63 to 2^64
2015-04-08	Joss	NF-PM1	B1=848419
2015-03-29	Joss	NF-PM1	B1=771290
2015-03-14	Joss	NF-PM1	B1=637430
2015-03-12	Joss	NF-PM1	B1=579482
2015-03-02	Joss	NF-PM1	B1=526802
2015-02-25	Joss	NF-PM1	B1=478911
2015-02-05	Joss	NF-PM1	B1=435374
2015-02-03	Joss	NF-PM1	B1=217687
2015-02-01	Joss	NF-PM1	B1=197898
2015-01-31	Joss	NF-PM1	B1=179908
2015-01-26	Joss	NF-PM1	B1=148685
2014-11-12	Joss	NF-PM1	B1=122881
2013-01-10	dbaugh	NF	no factor from 2^62 to 2^63
2012-02-27	markr	NF	no factor from 2^61 to 2^62
2010-11-19	markr	NF-PM1	B1=100000, B2=2075000, E=6
2010-11-12	Joss	NF-PM1	B1=15000
2009-02-14	Sturle Sunde	NF	no factor from 2^60 to 2^61

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