3 397 393 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
476349248142559197278365663	27	88.6	2023-05-28 17:53:25

ECM

Digits	B1	Curves
25	50000	276 / 280

Estimated T-Level: 24.9 ⓘ

TF below 2^78 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Robert Friberg	EFD721EC234A2ABB	0
Verified (Factored)	1999-07-04	Karsten Kroschel	EFD721EC234A2ABB	2918573

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2023-05-28	Haruka	A93B9EFCD6378A04	1	2015470	5	3

History

Date	User	Type	Result
2023-05-28	Steve Jacobson	CERT	PRP Certification Proof certified good
2023-05-28	Haruka	C-PRP	M3397393/476349248142559197278365663 : A93B9EFCD6378A04 PRP proof power = 7 PRP: Verified Proof certified good
2023-05-28	Haruka	F-ECM	Factor: 476349248142559197278365663 / (ECM curve 21, B1=250000, B2=294277830, Sigma=2654158734586038)
2023-05-23	Sid & Andy	NF-PM1	B1=6100000, B2=22018266270
2023-05-14	Joss	NF-PM1	B1=1000000, B2=887672940
2021-09-03	MadPoo	NF	no factor from 2^69 to 2^70
2021-07-29	mikr	NF-PM1	B1=4000000, B2=150000000, E=12
2021-06-21	TJAOI	NF	no factor from 2^68 to 2^69
2021-06-07	Numberwang	NF-PM1	B1=1000000, B2=30000000
2018-09-03	TJAOI	NF	no factor from 2^67 to 2^68
2017-03-12	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2015-04-05	Gordon Spence	NF	no factor from 2^65 to 2^66
2013-10-25	David Campeau	NF	no factor from 2^64 to 2^65
2012-12-09	Squeeky_Squirrel	NF-PM1	B1=230000, B2=6727500, E=12
2012-11-02	lycorn	NF	no factor from 2^62 to 2^64
2011-10-24	USAFSS	NF-PM1	B1=60000, B2=945000, E=6
2011-08-14	Grant McCracken	NF	no factor from 2^61 to 2^62
2009-07-11	Carsten Kossendey	NF-PM1	B1=15000, B2=206250
2009-03-25	S485122	NF	no factor from 2^60 to 2^61

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