3 442 979 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 2^81 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	7900000
B2 =	20272480410

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	99 / 640

Estimated T-Level: 25.8 ⓘ

Status	Date	User	Residue	Shift
Verified		John Lloyd	F6BE9C43FCC258E8	0
Verified	2003-01-25	Edo de Roo Jankovic	F6BE9C43FCC258E8	1557367

History

Date	User	Type	Result
2025-06-02	Architects Cubed	NF	no factor from 2^70 to 2^71
2023-05-02	Sid & Andy	NF-PM1	B1=7900000, B2=20272480410
2022-10-12	Joss	NF-PM1	B1=1000000, B2=1030142190
2022-10-11	Joss	NF-PM1	B1=1000000, B2=247008300
2022-09-30	Joss	NF-PM1	B1=1000000, B2=145208700
2022-06-15	TJAOI	NF	no factor from 2^69 to 2^70
2021-06-26	mikr	NF-PM1	B1=5000000, B2=200000000, E=12
2021-06-08	Numberwang	NF-PM1	B1=1000000, B2=30000000
2021-01-03	axn	NF	no factor from 2^68 to 2^69
2018-09-08	Joss	NF-PM1	B1=473000, B2=4257000
2018-09-07	Joss	NF-PM1	B1=473000, B2=3784000
2018-09-05	Joss	NF-PM1	B1=473000, B2=1892000
2018-09-04	Joss	NF-PM1	B1=473000, B2=1419000
2018-09-04	Joss	NF-PM1	B1=473000, B2=946000
2018-08-22	Joss	NF-PM1	B1=430000, B2=3870000
2018-08-21	Joss	NF-PM1	B1=430000, B2=3440000
2018-07-30	TJAOI	NF	no factor from 2^67 to 2^68
2017-02-06	Gordon Spence	NF	no factor from 2^66 to 2^67
2017-02-04	Joss	NF-PM1	B1=198720
2017-01-29	Joss	NF-PM1	B1=165600
2017-01-19	Joss	NF-PM1	B1=138000
2017-01-15	Squeeky_Squirrel	NF-PM1	B1=215000, B2=6288750, E=12
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-04-15	Gordon Spence	NF	no factor from 2^65 to 2^66
2015-02-07	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-07	VictordeHollander	NF	no factor from 2^63 to 2^64
2012-08-18	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2011-08-09	markr	NF	no factor to 2^62
2010-10-12	markr	NF-PM1	B1=115000, B2=2558750, E=6
2009-03-22	S485122	NF	no factor from 2^60 to 2^61

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