3 119 407 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Composite: proven not-prime with Lucas-Lehmer test

No factors below 2⁷¹

TF target 2⁶⁴

TF below 2^75 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	8800000
B2 =	22611525300

ECM

Digits	B1	Curves
25	50000	232 / 280

Estimated T-Level: 24.1 ⓘ

Status	Date	User	Residue	Shift
Verified		Philip Heede	5448D93E5F749432	0
Verified		Ray Strouble	5448D93E5F749432	0
Verified	1999-12-15	Brian Little	5448D93E5F749432	271046

History

Date	User	Type	Result
2025-07-24	Architects Cubed	NF	no factor from 2^70 to 2^71
2023-03-01	Sid & Andy	NF-PM1	B1=8800000, B2=22611525300
2022-10-30	Joss	NF-PM1	B1=1000000, B2=265074810
2022-09-27	Joss	NF-PM1	B1=1000000, B2=118249950
2020-11-28	axn	NF	no factor from 2^69 to 2^70
2020-11-28	axn	NF	no factor from 2^68 to 2^69
2019-01-21	TJAOI	NF	no factor from 2^67 to 2^68
2018-11-04	mikr	NF-PM1	B1=3000000, B2=100000000, E=12
2018-07-16	Joss	NF-PM1	B1=670000, B2=4020000
2018-07-15	Joss	NF-PM1	B1=670000, B2=2680000
2017-04-14	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-10-02	Joss	NF-PM1	B1=105000, B2=2551500, E=6
2016-09-29	Squeeky_Squirrel	NF-PM1	B1=195000, B2=5460000, E=12
2015-06-11	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
2013-01-07	dbaugh	NF	no factor from 2^62 to 2^63
2011-11-20	Grant McCracken	NF	no factor from 2^61 to 2^62
2011-08-26	Squeeky_Squirrel	NF-PM1	B1=105000, B2=2126250, E=6
2009-07-03	Carsten Kossendey	NF-PM1	B1=15000, B2=180000
2009-04-12	S485122	NF	no factor from 2^60 to 2^61

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