3 332 743 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 =	6300000
B2 =	22713580890

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	057ADDF0017B6236	0
Verified	1999-07-12	Ladislav Sladecek	057ADDF0017B6236	431464

History

Date	User	Type	Result
2025-06-18	Architects Cubed	NF	no factor from 2^70 to 2^71
2023-05-10	Sid & Andy	NF-PM1	B1=6300000, B2=22713580890
2023-05-09	Joss	NF-PM1	B1=1000000, B2=962851890
2022-08-30	TJAOI	NF	no factor from 2^69 to 2^70
2021-08-02	TJAOI	NF	no factor from 2^68 to 2^69
2020-06-05	mikr	NF-PM1	B1=4000000, B2=150000000, E=12
2018-11-12	TJAOI	NF	no factor from 2^67 to 2^68
2018-08-16	Joss	NF-PM1	B1=420000, B2=3360000
2018-08-15	Joss	NF-PM1	B1=420000, B2=2940000
2018-08-07	Joss	NF-PM1	B1=420000, B2=840000
2017-02-28	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-03-02	omylist	NF	no factor from 2^65 to 2^66
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
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
2012-11-24	Squeeky_Squirrel	NF-PM1	B1=210000, B2=4672500, E=6
2012-08-25	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2011-10-06	USAFSS	NF-PM1	B1=55000, B2=880000, E=6
2011-08-31	markr	NF	no factor to 2^62
2009-07-04	Carsten Kossendey	NF-PM1	B1=15000, B2=202500
2009-03-29	S485122	NF	no factor from 2^60 to 2^61

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