46 489 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 2^139 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	8000000000
B2 =	31749569371269750

ECM

Estimated T-Level: 43.3 ⓘ

Status	Date	User	Residue	Shift
Verified		Unknown	45B9	0
Verified		George Woltman	D65669DD9CDBC5B9	0
Verified		Brian J. Beesley	D65669DD9CDBC5B9	0
Verified	2015-04-11	MadPoo	D65669DD9CDBC5B9	17110

History

Date	User	Type	Result
2025-05-08	timc995	NF-PM1	B1=8000000000, B2=31749569371269750
2023-08-10	masser	NF-PP1	Start=166/41, B1=150000000, B2=26850000000
2023-04-19	JacobZ	NF-PM1	B1=700333732, B2=417604596178770
2023-02-16	Joss	NF-PM1	B1=53268826, B2=1246279474440
2022-09-25	masser	NF-PP1	Start=2/7, B1=10000000, B2=490000000
2022-09-25	masser	NF-PP1	Start=6/5, B1=5000000, B2=205000000
2022-09-25	masser	NF-PP1	Start=182/53, B1=2500000, B2=82500000
2021-07-22	Ruslan Borisov	NF	no factor from 2^65 to 2^66
2019-09-10	Yxinity	NF	no factor from 2^64 to 2^65
2019-09-10	Yxinity	NF	no factor from 2^64 to 2^65
2019-04-29	alex	NF-PM1	B1=1000000000, B2=50000000000, E=12
2018-07-23	Yxinity	NF	no factor from 2^63 to 2^64
2018-07-22	Yxinity	NF	no factor from 2^63 to 2^64
2017-06-10	c10ck3r	NF-PM1	B1=500000000, B2=10000000000, E=12
2016-07-22	Sid & Andy	NF	no factor from 2^62 to 2^63
2016-02-23	LaurV	NF	no factor from 2^57 to 2^58
2015-04-11	MadPoo	C-LL	D65669DD9CDBC5B9
2014-06-28	Sid & Andy	NF	no factor from 2^61 to 2^62
2013-11-30	LaurV	NF	no factor from 2^60 to 2^61
2012-06-24	alpertron	NF-PM1	B1=100000000, B2=2000000000, E=12
2012-05-29	Joss	NF-PM1	B1=53267826
2012-02-17	Joss	NF-PM1	B1=22194927
2011-07-24	Joss	NF-PM1	B1=17755942
2009-02-07	Sturle Sunde	NF	no factor from 2^59 to 2^60
2009-01-13	Sturle Sunde	NF	no factor from 2^58 to 2^59

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