3 612 607 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
247483627879981792928497753	27	87.7	2021-06-23 22:09:20

ECM

Digits	B1	Curves
25	50000	17 / 280

Estimated T-Level: 20.3 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Henrik Flodell	E7BF11F49C3089B3	0
Verified (Factored)	1999-07-30	Robert Frostick	E7BF11F49C3089B3	1771321

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-06-24	Luigi Morelli	4800C10DFB908E7F	1	1718538	5	3

History

Date	User	Type	Result
2022-05-24	Joss	NF-PM1	B1=100000, B2=130364850
2022-03-22	Joss	NF-PM1	B1=100000
2022-03-04	Joss	NF-PM1	B1=90000
2021-06-24	ANONYMOUS	CERT	PRP Certification Proof certified good
2021-06-24	Luigi Morelli	C-PRP	M3612607/247483627879981792928497753 : 4800C10DFB908E7F PRP proof power = 7 PRP: Verified Proof certified good
2021-06-23	kutens	F-ECM	Factor: 247483627879981792928497753 / (ECM curve 2, B1=50000, B2=6300000, Sigma=5125038545091088)
2020-10-19	axn	NF	no factor from 2^68 to 2^69
2020-08-03	axn	NF-PM1	B1=15000000, B2=1000000000, E=12
2020-06-05	axn	NF-PM1	B1=15000000, B2=450000000, E=12
2018-12-17	TJAOI	NF	no factor from 2^67 to 2^68
2016-12-23	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-10-18	ramgeis	NF	no factor from 2^65 to 2^66
2015-01-20	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-01-20	VictordeHollander	NF	no factor from 2^63 to 2^64
2012-06-20	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2011-12-02	markr	NF-PM1	B1=240000, B2=6180000, E=12
2011-06-02	markr	NF	no factor from 2^61 to 2^62
2009-07-06	Carsten Kossendey	NF-PM1	B1=20000, B2=245000
2009-03-12	S485122	NF	no factor from 2^60 to 2^61

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