3 644 587 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 =	10000000
B2 =	10027887870

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	116 / 640

Estimated T-Level: 25.9 ⓘ

Status	Date	User	Residue	Shift
Verified		Andy Kohler	301A86364E0119E1	0
Verified	1999-11-24	Robertas Judzentavicius	301A86364E0119E1	1097318

History

Date	User	Type	Result
2025-02-10	Joss	NF-PM1	B1=10000000, B2=10027887870
2024-11-28	TJAOI	NF	no factor from 2^70 to 2^71
2024-01-29	Joss	NF-PM1	B1=4746466, B2=9556597050
2023-10-24	Joss	NF-PM1	B1=2373234, B2=2584592010
2023-10-23	Joss	NF-PM1	B1=2373234, B2=217643790
2023-09-07	Joss	NF-PM1	B1=1000000, B2=5044589550
2023-08-28	Joss	NF-PM1	B1=1000000, B2=1257446190
2022-02-17	Gordon Spence	NF	no factor from 2^69 to 2^70
2020-11-07	axn	NF	no factor from 2^68 to 2^69
2020-08-26	axn	NF-PM1	B1=30000000, B2=600000000, E=12
2018-07-23	TJAOI	NF	no factor from 2^67 to 2^68
2016-12-26	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-10-20	ramgeis	NF	no factor from 2^65 to 2^66
2015-01-22	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-01-22	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-01-01	mikr	NF-PM1	B1=650000, B2=26600000, E=12
2012-06-05	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2012-01-26	Squeeky_Squirrel	NF-PM1	B1=90000, B2=1620000, E=6
2011-05-17	markr	NF	no factor to 2^62
2009-07-07	Carsten Kossendey	NF-PM1	B1=20000, B2=245000
2009-03-10	S485122	NF	no factor from 2^60 to 2^61

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