2 223 853 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
541770638078232941471	21	68.9	2020-07-01 04:45:33

ECM

Digits	B1	Curves
25	50000	81 / 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)		Bob Moulton	ED21DEAB4A0C8433	0
Verified (Factored)	1999-02-14	Jon Fournie	ED21DEAB4A0C8433	2078679
Verified (Factored)	2018-04-19	kkmrkkblmbrbk	ED21DEAB4A0C8433	1550438

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-07-01	M Miller	DF46F003D643EF41	1	768180	5	3
Verified	2020-07-03	Team_Inspector	DF46F003D643EF41	1	1709641	5	3

History

Date	User	Type	Result
2020-07-03	Team_Inspector	C-PRP	M2223853/541770638078232941471 : DF46F003D643EF41 PRP: Verified PRP without proof (not generated)
2020-07-01	M Miller	C-PRP	M2223853/541770638078232941471 : DF46F003D643EF41 PRP: Verified PRP without proof (not generated)
2020-07-01	MarkS	F-ECM	Factor: 541770638078232941471 / (ECM curve 2, B1=50000, B2=5000000, Sigma=8735203820829675)
2019-04-22	TJAOI	NF	no factor from 2^67 to 2^68
2018-04-19	kkmrkkblmbrbk	C-LL	ED21DEAB4A0C8433
2016-12-23	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-12-22	Alexander Dubrovin	NF-PM1	B1=2000000, B2=65000000, E=12
2015-11-21	Alexander Dubrovin	NF-PM1	B1=1000000, B2=5000000, E=6
2015-10-25	ramgeis	NF	no factor from 2^65 to 2^66
2015-05-02	Squeeky_Squirrel	NF-PM1	B1=160000, B2=4600000, E=6
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
2014-09-29	Joss	NF-PM1	B1=142724
2014-05-26	Joss	NF-PM1	B1=113862
2013-01-23	dbaugh	NF	no factor from 2^62 to 2^63
2012-04-19	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-01-12	Oscar Östlin	NF-PM1	B1=85000, B2=1593750, E=6
2010-10-21	Oscar Östlin	NF-PM1	B1=75011
2009-01-11	Sturle Sunde	NF	no factor from 2^60 to 2^61

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