2 221 229 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
78590620456788325809223	23	76.1	2020-02-13 21:21:51

ECM

Digits	B1	Curves
25	50000	97 / 280

Estimated T-Level: 21.7 ⓘ

TF below 2^67 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Charles Gallo	71F6E2779B19D8BD	0
Verified (Factored)	1999-03-15	James Terry	71F6E2779B19D8BD	2035183
Verified (Factored)	2018-04-19	kkmrkkblmbrbk	71F6E2779B19D8BD	1685249

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-02-14	Jinyuan Wang	A1C06329E81DD0B8	1	216960	5	3
Verified	2020-02-16	Bommer	A1C06329E81DD0B8	1	235411	5	3

History

Date	User	Type	Result
2020-02-16	Bommer	C-PRP	M2221229/78590620456788325809223 : A1C06329E81DD0B8 PRP: Verified PRP without proof (not generated)
2020-02-14	Jinyuan Wang	C-PRP	M2221229/78590620456788325809223 : A1C06329E81DD0B8 PRP: Verified PRP without proof (not generated)
2020-02-13	mnd9	F-ECM	Factor: 78590620456788325809223 / (ECM curve 1, B1=50000, B2=5000000, Sigma=2548890995973195)
2019-04-22	TJAOI	NF	no factor from 2^67 to 2^68
2018-04-19	kkmrkkblmbrbk	C-LL	71F6E2779B19D8BD
2016-03-15	Yxinity	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-12-20	Alexander Dubrovin	NF-PM1	B1=2000000, B2=65000000, E=12
2015-11-19	Alexander Dubrovin	NF-PM1	B1=1000000, B2=10000000, E=6
2015-11-19	Alexander Dubrovin	NF-PM1	B1=1000000, B2=5000000, E=6
2015-10-23	ramgeis	NF	no factor from 2^65 to 2^66
2015-05-01	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=142792
2014-05-26	Joss	NF-PM1	B1=113896
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
2011-01-01	Oscar Östlin	NF-PM1	B1=85000, B2=1593750, E=6
2010-10-13	Oscar Östlin	NF-PM1	B1=75011
2009-01-11	Sturle Sunde	NF	no factor from 2^60 to 2^61

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