1 731 181 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 2 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
79638017060078026079	20	66.1	2015-05-26 18:16:58
3574899210392561260847777	25	81.6	2020-05-18 10:37:12

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	107 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Ed Knapton	17A87DDFBFFE359F	0
Verified (Factored)	1998-11-28	T. L.	17A87DDFBFFE359F	1384314

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-03	Oliver Kruse	4B80BD73D075E075	1	0	1	3
Verified (Factored)	2017-11-03	kkmrkkblmbrbk	4B80BD73D075E075	1	1555038	1	3
Verified	2020-05-19	mnd9	FA366EFD664F850E	2	1308474	5	3
Verified	2020-05-23	Sébastien BROUCKE	FA366EFD664F850E	2	1699745	5	3

P-1 factors

Date	Factor	B1	B2
2015-05-26	79638017060078026079	970557	0

History

Date	User	Type	Result
2023-04-16	Kevin_9611	NF-PM1	B1=1170000, B2=2350134150
2020-05-23	Sébastien BROUCKE	C-PRP	M1731181/79638017060078026079/3574899210392561260847777 : FA366EFD664F850E PRP: Verified PRP without proof (not generated)
2020-05-19	mnd9	C-PRP	M1731181/79638017060078026079/3574899210392561260847777 : FA366EFD664F850E PRP: Verified PRP without proof (not generated)
2020-05-18	TJAOI	F-ECM	Factor: 3574899210392561260847777 / (ECM curve 32, B1=50000, B2=5000000)
2017-11-03	kkmrkkblmbrbk	C-PRP	M1731181/79638017060078026079 : 4B80BD73D075E075 PRP: Verified PRP without proof (not generated)
2017-10-03	Oliver Kruse	C-PRP	M1731181/79638017060078026079 : 4B80BD73D075E075 PRP: Verified PRP without proof (not generated)
2015-05-26	Joss	F-PM1	Factor: 79638017060078026079 / (P-1, B1=970557)
2015-05-22	Joss	NF-PM1	B1=882325
2015-05-07	Joss	NF-PM1	B1=802114
2015-05-04	snme2pm1	NF	no factor from 2^64 to 2^65
2015-05-04	snme2pm1	NF	no factor from 2^63 to 2^64
2015-05-01	Joss	NF-PM1	B1=729195
2015-04-08	Joss	NF-PM1	B1=602641
2015-03-15	Joss	NF-PM1	B1=498051
2015-03-08	Joss	NF-PM1	B1=452774
2015-03-01	Joss	NF-PM1	B1=411613
2015-02-21	Joss	NF-PM1	B1=374194
2015-02-12	Joss	NF-PM1	B1=340177
2015-01-29	Joss	NF-PM1	B1=281139
2015-01-27	Joss	NF-PM1	B1=255581
2014-12-02	Joss	NF-PM1	B1=211225
2014-09-10	Joss	NF-PM1	B1=174150
2014-05-06	Joss	NF-PM1	B1=137075
2014-04-04	Joss	NF-PM1	B1=100000
2011-02-07	Carsten Kossendey	NF-PM1	B1=90000, B2=1530000, E=6
2010-11-18	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-04-23	Architects Cubed	NF	no factor from 2^60 to 2^61

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