3 168 259 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 2^74 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	9400000
B2 =	24089580900

ECM

Digits	B1	Curves
25	50000	215 / 280

Estimated T-Level: 23.8 ⓘ

Status	Date	User	Residue	Shift
Verified		Kosahn Dietz	B48232152F1BE355	0
Verified	1999-06-15	Alan Vidmar	B48232152F1BE355	1901353

History

Date	User	Type	Result
2025-07-19	Architects Cubed	NF	no factor from 2^70 to 2^71
2023-04-11	Sid & Andy	NF-PM1	B1=9400000, B2=24089580900
2022-12-16	TJAOI	NF	no factor from 2^69 to 2^70
2022-10-30	Joss	NF-PM1	B1=1000000, B2=265074810
2022-10-01	Joss	NF-PM1	B1=1000000, B2=118249950
2021-04-19	TJAOI	NF	no factor from 2^68 to 2^69
2019-08-12	mikr	NF-PM1	B1=3000000, B2=100000000, E=12
2019-01-14	TJAOI	NF	no factor from 2^67 to 2^68
2017-04-23	Gordon Spence	NF	no factor from 2^66 to 2^67
2015-11-30	HBendtz	NF-PM1	B1=500000, B2=12000000, e=12
2015-11-07	Joss	NF-PM1	B1=551773
2015-08-20	Joss	NF-PM1	B1=433756
2015-06-17	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
2014-09-25	Joss	NF-PM1	B1=100518
2014-06-01	Joss	NF-PM1	B1=80259
2013-01-03	dbaugh	NF	no factor from 2^62 to 2^63
2011-10-29	markr	NF	no factor to 2^62
2011-09-17	USAFSS	NF-PM1	B1=60000, B2=960000, E=6
2009-07-03	Carsten Kossendey	NF-PM1	B1=15000, B2=191250
2009-04-08	S485122	NF	no factor from 2^60 to 2^61

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