2 289 961 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
1073281306404150081487	22	69.9	2020-07-17 14:54:55

ECM

Digits	B1	Curves
25	50000	80 / 280

Estimated T-Level: 21.4 ⓘ

TF below 2^66 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Luigi Morelli	C27D4DC81E26F7EA	0
Verified (Factored)		Tom Cage	C27D4DC81E26F7EA	0
Verified (Factored)	1999-03-01	James S Dehling	C27D4DC81E26F7EA	2088164

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-07-18	oodaira	28805FC15942BAC9	1	909385	5	3
Verified	2020-07-20	pew	28805FC15942BAC9	1	726970	5	3

History

Date	User	Type	Result
2023-05-13	This -Anonymous-	NF-PM1	B1=800000, B2=40000000, E=12
2020-07-20	pew	C-PRP	M2289961/1073281306404150081487 : 28805FC15942BAC9 PRP: Verified PRP without proof (not generated)
2020-07-18	oodaira	C-PRP	M2289961/1073281306404150081487 : 28805FC15942BAC9 PRP: Verified PRP without proof (not generated)
2020-07-17	GAN	F-ECM	Factor: 1073281306404150081487 / (ECM curve 2, B1=50000, B2=5000000, Sigma=5189945048902292)
2019-06-17	TJAOI	NF	no factor from 2^67 to 2^68
2017-05-20	Gordon Spence	NF	no factor from 2^66 to 2^67
2017-04-07	Joss	NF-PM1	B1=743920, B2=7439200, E=12
2017-04-04	Joss	NF-PM1	B1=619934, B2=6199340, E=12
2017-04-01	Joss	NF-PM1	B1=516612, B2=5166120, E=6
2017-03-28	Joss	NF-PM1	B1=430510, B2=4305100, E=6
2017-03-24	Joss	NF-PM1	B1=358759, B2=3587590, E=6
2017-02-25	Joss	NF-PM1	B1=298966, B2=2989660, E=6
2016-10-07	Joss	NF-PM1	B1=144179, B2=15728640, E=12
2016-02-23	Mark Rose	NF	no factor from 2^59 to 2^60
2015-11-02	ramgeis	NF	no factor from 2^65 to 2^66
2015-03-12	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-12	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-12-06	Jerry Hallett	NF	no factor from 2^62 to 2^63
2012-05-11	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2009-01-11	Sturle Sunde	NF	no factor from 2^60 to 2^61

Username
Password