1 670 819 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 1 known prime factor. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
4440921157776696892886226109727	31	101.8	2018-06-11 16:38:04

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)		Phil Gibbs	8392909C5A7624AE	0
Verified (Factored)	1998-12-21	george brunton	8392909C5A7624AE	1297163
Verified (Factored)	2015-07-19	MadPoo	8392909C5A7624AE	201507

PRP Cofactor

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2018-06-12	Oliver Kruse	BADC9B77B5FEF566	1	1291232	5	3
Verified	2018-06-12	Daniil Tsarkov	BADC9B77B5FEF566	1	474770	5	3
Verified	2018-06-12	kkmrkkblmbrbk	BADC9B77B5FEF566	1	798971	5	3

P-1 factors

Date	Factor	B1	B2
2018-06-11	4440921157776696892886226109727	1670819	167081900

History

Date	User	Type	Result
2018-06-12	kkmrkkblmbrbk	C-PRP	M1670819/4440921157776696892886226109727 : BADC9B77B5FEF566 PRP: Verified PRP without proof (not generated)
2018-06-12	Daniil Tsarkov	C-PRP	M1670819/4440921157776696892886226109727 : BADC9B77B5FEF566 PRP: Verified PRP without proof (not generated)
2018-06-12	Oliver Kruse	C-PRP	M1670819/4440921157776696892886226109727 : BADC9B77B5FEF566 PRP: Verified PRP without proof (not generated)
2018-06-11	Joss	F-PM1	Factor: 4440921157776696892886226109727 / (P-1, B1=1670819, B2=167081900, E=12)
2018-02-20	Joss	NF-PM1	B1=1670819, B2=80000000, E=12
2018-02-06	Joss	NF-PM1	B1=1670819, B2=40000000, E=12
2018-01-24	Joss	NF-PM1	B1=1670819, B2=20000000, E=12
2017-09-29	TJAOI	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^61 to 2^62
2016-02-23	Mark Rose	NF	no factor from 2^57 to 2^60
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-10-11	ramgeis	NF	no factor from 2^65 to 2^66
2015-07-19	MadPoo	C-LL	8392909C5A7624AE
2015-05-13	monst	NF	no factor from 2^64 to 2^65
2015-05-12	omylist	NF	no factor from 2^63 to 2^64
2012-03-01	Axon	NF-PM1	B1=1000000, B2=20000000, E=12
2012-03-01	Axon	NF-PM1	B1=1000000, B2=8000000, E=12
2012-02-29	Axon	NF-PM1	B1=1000000
2012-02-29	Axon	NF-PM1	B1=900000
2012-02-29	Axon	NF-PM1	B1=800000
2012-02-29	Axon	NF-PM1	B1=700000
2012-02-29	Axon	NF-PM1	B1=600000
2012-02-29	Axon	NF-PM1	B1=500000
2012-02-29	Axon	NF-PM1	B1=400000
2012-02-29	Axon	NF-PM1	B1=300000
2012-02-29	Axon	NF-PM1	B1=200000
2012-02-29	Axon	NF-PM1	B1=100000
2010-08-31	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-04-25	Architects Cubed	NF	no factor from 2^60 to 2^61

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