3 673 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Composite: proven not-prime with Lucas-Lehmer test

No factors below 2⁶⁶

TF target 2⁴⁴

TF below 2^218 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	1000000000000
B2 =	9223372036854775807

ECM

Estimated T-Level: 67.0 ⓘ

Status	Date	User	Residue	Shift
Verified		Unknown	0396	0
Verified		George Woltman	8AEA7DA7C5F28396	0
Verified		Brian J. Beesley	8AEA7DA7C5F28396	0
Verified	2015-04-11	MadPoo	8AEA7DA7C5F28396	1859

History

Date	User	Type	Result
2024-09-10	tbusby	NF-PM1	B1=1000000000000, B2=9224725695615109680
2024-09-02	tbusby	NF-PM1	B1=1000000000000, B2=138357366687540
2023-08-12	masser	NF-PP1	Start=6/5, B1=2540000000, B2=454660000000
2023-07-11	masser	NF-PP1	Start=190/67, B1=2540000000, B2=101600000000
2023-07-07	masser	NF-PM1	B1=72000000000, B2=90401203222730400
2022-05-02	Anton Repko	NF	no factor from 2^65 to 2^66
2021-05-13	ATH	NF-PP1	Start=2/7, B1=1000000000, B2=241000000000
2020-12-30	Anton Repko	NF	no factor from 2^64 to 2^65
2018-04-01	snme2pm1	NF	no factor from 2^63 to 2^64
2016-11-29	snme2pm1	NF	no factor from 2^62 to 2^63
2016-05-18	-Anonymous-	NF-PM1	B1=400000000000, B2=4000000000000, E=12
2016-05-12	-Anonymous-	NF-PM1	B1=200000000000, B2=2000000000000, E=12
2016-05-08	-Anonymous-	NF-PM1	B1=100000000000, B2=1000000000000, E=12
2016-02-23	LaurV	NF	no factor from 2^57 to 2^58
2015-07-16	snme2pm1	NF	no factor from 2^61 to 2^62
2015-04-11	MadPoo	C-LL	8AEA7DA7C5F28396
2015-02-18	mikr	NF-PM1	B1=25000000000, B2=2000000000000, E=12
2015-02-01	Jayder	NF-PM1	B1=3131005715, B2=200384365740, E=12
2012-09-29	bcp19	NF	no factor from 2^60 to 2^61
2011-04-21	Joss	NF-PM1	B1=10000000000
2011-02-01	monst	NF	no factor from 2^58 to 2^60

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