3 177 169 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 =	9400000
B2 =	24116827350

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	109 / 640

Estimated T-Level: 25.9 ⓘ

Status	Date	User	Residue	Shift
Verified		Robert Friberg	7D17A2D147865BCC	0
Verified	1999-12-30	Thomas Wessel	7D17A2D147865BCC	703608

History

Date	User	Type	Result
2025-07-18	Architects Cubed	NF	no factor from 2^70 to 2^71
2023-03-30	Sid & Andy	NF-PM1	B1=9400000, B2=24116827350
2023-01-31	Joss	NF-PM1	B1=1000000, B2=380789640
2022-12-16	TJAOI	NF	no factor from 2^69 to 2^70
2022-09-30	Joss	NF-PM1	B1=1000000, B2=118249950
2021-05-24	TJAOI	NF	no factor from 2^68 to 2^69
2021-02-15	Numberwang	NF-PM1	B1=166000, B2=5229000, E=6
2019-09-06	mikr	NF-PM1	B1=3000000, B2=120000000, E=12
2019-01-07	TJAOI	NF	no factor from 2^67 to 2^68
2017-04-25	Gordon Spence	NF	no factor from 2^66 to 2^67
2015-12-02	HBendtz	NF-PM1	B1=500000, B2=12000000, e=12
2015-11-30	Joss	NF-PM1	B1=509666
2015-11-28	Joss	NF-PM1	B1=463333
2015-06-17	Tha	NF	no factor from 2^65 to 2^66
2015-02-15	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-15	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-09-29	Joss	NF-PM1	B1=100404
2014-06-01	Joss	NF-PM1	B1=80202
2013-01-03	dbaugh	NF	no factor from 2^62 to 2^63
2011-10-27	Grant McCracken	NF	no factor from 2^61 to 2^62
2011-09-11	Squeeky_Squirrel	NF-PM1	B1=60000, B2=975000, E=6
2009-07-03	Carsten Kossendey	NF-PM1	B1=15000, B2=191250
2009-04-09	S485122	NF	no factor from 2^60 to 2^61

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