1 941 263 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

No factors below 2⁶⁸

TF target 2⁶²

TF below 2^81 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	50000000
B2 =	256190404470

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	106 / 640

Estimated T-Level: 25.8 ⓘ

Status	Date	User	Residue	Shift
Verified		Bruce Appleby	C4AB24CD9D4CF1C3	0
Verified	1999-01-29	Louis Towles	C4AB24CD9D4CF1C3	74235
Verified	2015-06-27	MadPoo	C4AB24CD9D4CF1C3	1325947

History

Date	User	Type	Result
2023-04-13	RichD0	NF-PM1	B1=50000000, B2=256190404470
2022-08-16	masser	NF-PP1	Start=2/7, B1=1500000, B2=54000000
2022-08-06	Wentao Huang	NF-PM1	B1=2330000, B2=10302160050
2019-05-11	chuenkit	NF	no factor from 2^67 to 2^68
2018-09-11	Joss	NF-PM1	B1=1941263, B2=194126300, E=12
2018-02-28	Joss	NF-PM1	B1=1941263, B2=113248640, E=12
2018-02-11	Joss	NF-PM1	B1=1941263, B2=56624320, E=12
2018-02-02	Joss	NF-PM1	B1=1941263, B2=28312160, E=12
2017-11-17	TJAOI	NF	no factor from 2^66 to 2^67
2017-04-12	Joss	NF-PM1	B1=1415608, B2=14156080, E=12
2017-01-22	Joss	NF-PM1	B1=1179674
2017-01-04	Joss	NF-PM1	B1=983062
2016-12-24	Joss	NF-PM1	B1=819219
2016-12-16	Joss	NF-PM1	B1=682683
2016-12-15	Joss	NF-PM1	B1=568903
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2016-02-23	Mark Rose	NF	no factor from 2^61 to 2^62
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-10-08	Bruno Victal	NF-PM1	B1=500000, B2=15000000, E=12
2015-09-05	ramgeis	NF	no factor from 2^65 to 2^66
2015-06-27	MadPoo	C-LL	C4AB24CD9D4CF1C3
2015-05-20	monst	NF	no factor from 2^64 to 2^65
2015-05-20	monst	NF	no factor from 2^63 to 2^64
2011-12-11	markr	NF-PM1	B1=275000, B2=6000000, E=12
2011-08-27	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-01-27	S485122	NF	no factor from 2^60 to 2^61

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