3 419 921 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
63215108765073636623105863	26	85.7	2021-06-14 03:52:42

ECM

Digits	B1	Curves
25	50000	33 / 280

Estimated T-Level: 20.6 ⓘ

TF below 2^63 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Robert Clark	706D94AA37B9317E	0
Verified (Factored)	1999-07-26	Michael J. Kilfoyle	706D94AA37B9317E	834536

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-06-15	DKZ	5220BB5334FFDB57	1	2823897	5	3
Verified	2021-06-21	Nesowa	5220BB5334FFDB57	1	1851810	5	3

History

Date	User	Type	Result
2022-04-10	Joss	NF-PM1	B1=1000000, B2=126668850
2022-04-09	Joss	NF-PM1	B1=1000000
2021-06-21	Nesowa	C-PRP	M3419921/63215108765073636623105863 : 5220BB5334FFDB57 PRP: Verified PRP without proof (not generated)
2021-06-15	arnaud	CERT	PRP Certification Proof certified good
2021-06-15	DKZ	C-PRP	M3419921/63215108765073636623105863 : 5220BB5334FFDB57 PRP proof power = 7 PRP: Verified Proof certified good
2021-06-14	kutens	F-ECM	Factor: 63215108765073636623105863 / (ECM curve 4, B1=50000, B2=6300000, Sigma=7310940259077693)
2021-04-18	axn	NF-PM1	B1=14000000, B2=700000000
2020-12-29	axn	NF	no factor from 2^68 to 2^69
2018-12-17	TJAOI	NF	no factor from 2^67 to 2^68
2017-01-31	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2015-04-10	Gordon Spence	NF	no factor from 2^65 to 2^66
2015-02-07	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-07	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-09-11	HBendtz	NF-PM1	B1=500000, B2=10000000, E=12
2014-07-18	Joss	NF-PM1	B1=78768
2012-08-18	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2011-10-28	USAFSS	NF-PM1	B1=60000, B2=945000, E=6
2011-08-02	Grant McCracken	NF	no factor from 2^61 to 2^62
2009-07-06	Carsten Kossendey	NF-PM1	B1=15000, B2=210000
2009-03-24	S485122	NF	no factor from 2^60 to 2^61

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