2 541 697 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
47623895443960911418172023	26	85.3	2021-07-30 07:42:18

ECM

Digits	B1	Curves
25	50000	126 / 280

Estimated T-Level: 22.3 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)		Thomas Honold	48A18FCC133B6B5C	0
Verified (Factored)	1999-07-04	John Bafford	48A18FCC133B6B5C	2038542
Verified (Factored)	2018-06-10	kkmrkkblmbrbk	48A18FCC133B6B5C	803474

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-08-01	/r/counting	66B1354EBCA35458	1	1371499	5	3

History

Date	User	Type	Result
2021-08-01	MrApina	CERT	PRP Certification Proof certified good
2021-08-01	/r/counting	C-PRP	M2541697/47623895443960911418172023 : 66B1354EBCA35458 PRP proof power = 7 PRP: Verified Proof certified good
2021-07-30	kutens	F-ECM	Factor: 47623895443960911418172023 / (ECM curve 3, B1=50000, B2=6750000, Sigma=4237103597455632)
2021-06-21	TJAOI	NF	no factor from 2^68 to 2^69
2019-04-15	TJAOI	NF	no factor from 2^67 to 2^68
2018-09-08	mikr	NF-PM1	B1=3000000, B2=135000000, E=12
2018-08-11	Joss	NF-PM1	B1=600000, B2=6000000, E=6
2018-06-10	kkmrkkblmbrbk	C-LL	48A18FCC133B6B5C
2017-08-08	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^59 to 2^60
2015-11-08	ramgeis	NF	no factor from 2^65 to 2^66
2015-02-23	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-23	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-14	dbaugh	NF	no factor from 2^62 to 2^63
2012-06-15	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-04-08	James Heinrich	NF-PM1	B1=300000, B2=8000000, E=12
2011-01-07	Joss	NF-PM1	B1=50000
2011-01-02	Joss	NF-PM1	B1=30000
2010-12-19	Joss	NF-PM1	B1=20000
2009-01-27	Sturle Sunde	NF	no factor from 2^60 to 2^61

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