3 146 371 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

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

Factored

Factor	Digits	Bits	Date
33809145260072223489143	23	74.8	2020-11-08 08:28:14

ECM

Digits	B1	Curves
25	50000	57 / 280

Estimated T-Level: 21.0 ⓘ

TF below 2^65 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Jim Howell	B7633ECC7C5C6B26	0
Verified (Factored)	1999-10-21	Mike Wingrave	B7633ECC7C5C6B26	1915921

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-11-08	SRJ2877	9FA0ABB31D466BA4	1	2882534	5	3

History

Date	User	Type	Result
2022-09-07	Joss	NF-PM1	B1=1080636, B2=226749600
2022-01-24	Joss	NF-PM1	B1=1080636, B2=119912100
2021-02-18	Joss	NF	no factor from 2^66 to 2^67
2021-02-18	Joss	NF	no factor from 2^65 to 2^66
2021-01-17	Joss	NF-PM1	B1=666000, B2=3146371, E=6
2020-11-08	Ben Delo	CERT	PRP Certification Proof certified good
2020-11-08	SRJ2877	C-PRP	M3146371/33809145260072223489143 : 9FA0ABB31D466BA4 PRP proof power = 7 PRP: Verified Proof certified good
2020-11-08	SRJ2877	F-ECM	Factor: 33809145260072223489143 / (ECM curve 42, B1=50000, B2=5000000)
2019-03-29	mikr	NF-PM1	B1=3000000, B2=100000000, E=12
2018-12-24	TJAOI	NF	no factor from 2^67 to 2^68
2018-07-11	Joss	NF-PM1	B1=636000, B2=6360000, E=12
2017-04-19	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-11-14	Squeeky_Squirrel	NF-PM1	B1=195000, B2=5460000, E=12
2015-06-14	Tha	NF	no factor from 2^65 to 2^66
2015-02-11	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-11	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-09-01	Squeeky_Squirrel	NF-PM1	B1=110000, B2=2475000, E=6
2013-01-03	dbaugh	NF	no factor from 2^62 to 2^63
2011-11-05	markr	NF	no factor from 2^61 to 2^62
2011-09-06	Squeeky_Squirrel	NF-PM1	B1=55000, B2=935000, E=6
2009-07-03	Carsten Kossendey	NF-PM1	B1=15000, B2=183750
2009-04-10	S485122	NF	no factor from 2^60 to 2^61

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