2 503 211 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
564772940123744893110406511	27	88.9	2021-10-29 03:57:32

ECM

Digits	B1	Curves
25	50000	143 / 280

Estimated T-Level: 22.6 ⓘ

TF below 2^70 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Steven Berry	E970B7BA465E2D7C	0
Verified (Factored)	1999-04-02	dave platt	E970B7BA465E2D7C	2366677
Verified (Factored)	2018-06-02	kkmrkkblmbrbk	E970B7BA465E2D7C	2443740

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-10-31	SRJ2877	2462E11414C77025	1	1399333	5	3

History

Date	User	Type	Result
2021-10-31	ari.orn	CERT	PRP Certification Proof certified good
2021-10-31	SRJ2877	C-PRP	M2503211/564772940123744893110406511 : 2462E11414C77025 PRP proof power = 7 PRP: Verified Proof certified good
2021-10-29	daveward2005	F-ECM	Factor: 564772940123744893110406511 / (ECM curve 3, B1=50000, B2=5000000, Sigma=3751689927274768)
2021-06-21	TJAOI	NF	no factor from 2^68 to 2^69
2019-05-20	TJAOI	NF	no factor from 2^67 to 2^68
2018-06-02	kkmrkkblmbrbk	C-LL	E970B7BA465E2D7C
2018-04-06	mikr	NF-PM1	B1=3000000, B2=135000000, E=12
2017-11-01	Joss	NF-PM1	B1=600000, B2=6000000, E=6
2017-07-29	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
2015-11-04	ramgeis	NF	no factor from 2^65 to 2^66
2015-02-18	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-18	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-14	dbaugh	NF	no factor from 2^62 to 2^63
2012-06-12	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-03-01	James Heinrich	NF-PM1	B1=300000, B2=8000000, E=12
2011-01-04	Joss	NF-PM1	B1=50000
2011-01-01	Joss	NF-PM1	B1=30000
2010-12-16	Joss	NF-PM1	B1=20000
2009-01-29	Sturle Sunde	NF	no factor from 2^60 to 2^61

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