3 259 667 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 1 known prime factor. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
6668339936814363272058527	25	82.5	2024-04-23 19:36:05

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	92 / 640

Estimated T-Level: 25.7 ⓘ

TF below 2^80 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		john rheinstein	EF80677558754934	0
Verified (Factored)	1999-08-22	Geoff Wing	EF80677558754934	1230696

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2024-04-28	Stef42	B8321D1FB7433162	1	994580	5	3

History

Date	User	Type	Result
2024-04-28	IIMORI	CERT	PRP Certification Proof certified good
2024-04-28	Stef42	C-PRP	M3259667/6668339936814363272058527 : B8321D1FB7433162 PRP proof power = 7 PRP: Verified Proof certified good
2024-04-23	Stef42	F-ECM	Factor: 6668339936814363272058527 / (ECM curve 83, B1=101851, B2=211882125, Edwards Sigma=7014262028488100)
2023-06-06	Sid & Andy	NF-PM1	B1=8600000, B2=22046060400
2023-05-29	Joss	NF-PM1	B1=1000000, B2=2236514280
2021-11-03	TJAOI	NF	no factor from 2^69 to 2^70
2021-02-07	ViliamF	NF	no factor from 2^68 to 2^69
2020-09-12	mikr	NF-PM1	B1=4000000, B2=150000000, E=12
2019-01-07	TJAOI	NF	no factor from 2^67 to 2^68
2017-03-29	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-01-19	Joss	NF-PM1	B1=415800, B2=4158000, E=6
2015-06-28	Tha	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
2014-10-07	Joss	NF-PM1	B1=99380
2014-06-11	Joss	NF-PM1	B1=79690
2012-12-30	dbaugh	NF	no factor from 2^62 to 2^63
2011-09-22	Grant McCracken	NF	no factor from 2^61 to 2^62
2011-09-14	USAFSS	NF-PM1	B1=60000, B2=1050000, E=6
2009-07-05	Carsten Kossendey	NF-PM1	B1=15000, B2=191250
2009-04-03	S485122	NF	no factor from 2^60 to 2^61

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