2 898 739 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
1453456821250226739407	22	70.3	2021-07-17 15:44:39

ECM

Digits	B1	Curves
25	50000	86 / 280

Estimated T-Level: 21.5 ⓘ

TF below 2^67 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Steve Sommars	6BBD6F3B00C3EFBD	0
Verified (Factored)	1999-08-16	Peter Baumeister	6BBD6F3B00C3EFBD	2196336
Verified (Factored)	2018-09-29	kkmrkkblmbrbk	6BBD6F3B00C3EFBD	383421

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-07-17	SRJ2877	9EC7E7FA854EA933	1	1995440	5	3

History

Date	User	Type	Result
2021-07-17	slandrum	CERT	PRP Certification Proof certified good
2021-07-17	SRJ2877	C-PRP	M2898739/1453456821250226739407 : 9EC7E7FA854EA933 PRP proof power = 7 PRP: Verified Proof certified good
2021-07-17	daveward2005	F-ECM	Factor: 1453456821250226739407 / (ECM curve 2, B1=50000, B2=5000000, Sigma=1762798453173821)
2021-04-15	TJAOI	NF	no factor from 2^68 to 2^69
2020-02-16	masser	NF-PM1	B1=5000000, B2=200000000, E=12
2019-11-04	masser	NF-PM1	B1=2900000, B2=29000000, E=12
2019-01-14	chuenkit	NF	no factor from 2^67 to 2^68
2018-09-29	kkmrkkblmbrbk	C-LL	6BBD6F3B00C3EFBD
2017-11-16	Gordon Spence	NF	no factor from 2^66 to 2^67
2017-08-19	Joss	NF-PM1	B1=400000, B2=4000000, E=6
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2016-02-19	ramgeis	NF	no factor from 2^65 to 2^66
2015-04-22	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-04-22	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-10	dbaugh	NF	no factor from 2^62 to 2^63
2012-01-12	Grant McCracken	NF	no factor from 2^61 to 2^62
2011-02-23	Carsten Kossendey	NF-PM1	B1=200000, B2=5000000, E=6
2010-12-24	Joss	NF-PM1	B1=20000
2009-07-03	Carsten Kossendey	NF-PM1	B1=15000, B2=168750
2009-02-13	Sturle Sunde	NF	no factor from 2^60 to 2^61

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