2 213 243 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
1848797242866328485481	22	70.6	2020-05-06 09:19:11

ECM

Digits	B1	Curves
25	50000	72 / 280

Estimated T-Level: 21.3 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)		Greg Hawley	85DD22CD2B1C1FAB	0
Verified (Factored)	1999-02-07	Kai-ming Poon	85DD22CD2B1C1FAB	948789
Verified (Factored)	2018-04-18	kkmrkkblmbrbk	85DD22CD2B1C1FAB	2032820

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-05-06	M Miller	3303E49BF9A7F613	1	701513	5	3
Verified	2020-05-08	arnaud	3303E49BF9A7F613	1	1029562	5	3

History

Date	User	Type	Result
2020-05-08	arnaud	C-PRP	M2213243/1848797242866328485481 : 3303E49BF9A7F613 PRP: Verified PRP without proof (not generated)
2020-05-06	M Miller	C-PRP	M2213243/1848797242866328485481 : 3303E49BF9A7F613 PRP: Verified PRP without proof (not generated)
2020-05-06	mnd9	F-ECM	Factor: 1848797242866328485481 / (ECM curve 3, B1=50000, B2=5000000, Sigma=4917881471330295)
2020-01-14	mikr	NF-PM1	B1=5000000, B2=200000000, E=12
2019-04-29	TJAOI	NF	no factor from 2^67 to 2^68
2018-04-18	kkmrkkblmbrbk	C-LL	85DD22CD2B1C1FAB
2017-02-13	Smok_bmv	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-12-11	Alexander Dubrovin	NF-PM1	B1=2000000, B2=65000000, E=12
2015-11-14	Alexander Dubrovin	NF-PM1	B1=1500000, B2=10000000, E=12
2015-11-14	Alexander Dubrovin	NF-PM1	B1=1000000, B2=5000000, E=6
2015-10-22	ramgeis	NF	no factor from 2^65 to 2^66
2015-03-06	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-06	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-23	dbaugh	NF	no factor from 2^62 to 2^63
2012-04-17	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2012-01-07	Squeeky_Squirrel	NF-PM1	B1=145000, B2=3190000, E=6
2011-01-16	Joss	NF-PM1	B1=50000
2010-10-09	Oscar Östlin	NF-PM1	B1=35000, B2=551250
2009-01-08	Sturle Sunde	NF	no factor from 2^60 to 2^61

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