1 861 649 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
4094489381000850601409	22	71.8	2021-09-29 12:11:07
66110587706746041115380121	26	85.8	2020-01-27 05:11:34

ECM

Digits	B1	Curves
25	50000	264 / 280

Estimated T-Level: 24.7 ⓘ

TF below 2^77 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1997-12-13	Larry English	31FD6BC8A9392688	0
Verified (Factored)	1998-12-27	Nikolay Tehov	31FD6BC8A9392688	1089873
Verified (Factored)	2015-06-27	MadPoo	31FD6BC8A9392688	23436

PRP Cofactor

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2020-01-27	mrh	023CCC3BAB28DB2E	1	1584957	5	3
Verified (Factored)	2020-02-01	oodaira	023CCC3BAB28DB2E	1	526762	5	3
Verified	2021-10-01	JackBlock	023CCC3BAB28DB2E	2	487361	5	3

History

Date	User	Type	Result
2021-10-01	curtisc	CERT	PRP Certification Proof certified good
2021-10-01	JackBlock	C-PRP	M1861649/4094489381000850601409/66110587706746041115380121 : 023CCC3BAB28DB2E PRP proof power = 7 PRP: Verified Proof certified good
2021-09-29	TJAOI	F-ECM	Factor: 4094489381000850601409 / (ECM curve 91, B1=50000, B2=6600000)
2020-02-01	oodaira	C-PRP	M1861649/66110587706746041115380121 : 023CCC3BAB28DB2E PRP: Verified (Factored) PRP without proof (not generated)
2020-01-27	mrh	C-PRP	M1861649/66110587706746041115380121 : 023CCC3BAB28DB2E PRP: Verified (Factored) PRP without proof (not generated)
2020-01-27	mnd9	F-ECM	Factor: 66110587706746041115380121 / (ECM curve 3, B1=50000, B2=5000000, Sigma=4038300312722144)
2019-07-01	TJAOI	NF	no factor from 2^67 to 2^68
2018-05-07	TJAOI	NF	no factor from 2^66 to 2^67
2017-12-26	Joss	NF-PM1	B1=2488320, B2=248832000, E=12
2017-02-12	Joss	NF-PM1	B1=1244160, B2=12441600, E=12
2017-01-14	Joss	NF-PM1	B1=1036800
2016-12-30	Joss	NF-PM1	B1=864000
2016-10-29	Joss	NF-PM1	B1=720000
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
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-10-07	Bruno Victal	NF-PM1	B1=500000, B2=15000000, E=12
2015-09-10	ramgeis	NF	no factor from 2^65 to 2^66
2015-06-27	MadPoo	C-LL	31FD6BC8A9392688
2015-05-07	snme2pm1	NF	no factor from 2^64 to 2^65
2015-05-07	snme2pm1	NF	no factor from 2^63 to 2^64
2012-01-05	markr	NF-PM1	B1=275000, B2=6000000, E=12
2011-03-08	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-04-06	Architects Cubed	NF	no factor from 2^60 to 2^61

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