1 992 953 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

No factors below 2⁷¹

TF target 2⁶²

TF below 2^80 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	20000000
B2 =	54622896900

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	68 / 640

Estimated T-Level: 25.5 ⓘ

Status	Date	User	Residue	Shift
Verified		Joel Smith	7262924036C08E88	0
Verified	1999-01-29	Stephen Wood	7262924036C08E88	1095167
Verified	2015-07-06	MadPoo	7262924036C08E88	1948697

History

Date	User	Type	Result
2022-08-13	masser	NF-PP1	Start=2/7, B1=1400000, B2=46200000
2022-05-06	RichD0	NF-PM1	B1=20000000, B2=54622896900
2018-11-26	Joss	NF-PM1	B1=1992953, B2=249119125, E=12
2018-05-21	Joss	NF-PM1	B1=1992953, B2=199295300, E=12
2018-03-10	Joss	NF-PM1	B1=1992953, B2=120000000, E=12
2018-02-15	Joss	NF-PM1	B1=1992953, B2=60000000, E=12
2018-02-02	Joss	NF-PM1	B1=1992953, B2=30000000, E=12
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-10-23	ramgeis	NF	no factor from 2^70 to 2^71
2015-07-06	MadPoo	C-LL	7262924036C08E88
2014-01-04	Never Odd Or Even	NF	no factor from 2^69 to 2^70
2014-01-04	Never Odd Or Even	NF	no factor from 2^68 to 2^69
2014-01-04	Never Odd Or Even	NF	no factor from 2^67 to 2^68
2014-01-04	Never Odd Or Even	NF	no factor from 2^66 to 2^67
2014-01-04	Never Odd Or Even	NF	no factor from 2^65 to 2^66
2011-05-03	Xyzzy	NF	no factor from 2^64 to 2^65
2011-05-03	Xyzzy	NF	no factor from 2^63 to 2^64
2011-05-03	Xyzzy	NF	no factor from 2^62 to 2^63
2011-05-03	Xyzzy	NF	no factor from 2^61 to 2^62
2011-03-04	kurly	NF-PM1	B1=1000000, B2=30000000, E=12
2009-12-09	S485122	NF	no factor from 2^60 to 2^61

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