2 075 833 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

2075833

Factored

Factor	Digits	Bits	Date
3940167732016334942303	22	71.7	2021-10-05 23:29:26

ECM

Digits	B1	Curves
25	50000	199 / 280

Estimated T-Level: 23.6 ⓘ

TF below 2^73 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Johan Småros	7199C4DC8422DBD2	0
Verified (Factored)	1999-01-29	Saif Shah Mohammed	7199C4DC8422DBD2	1994259
Verified (Factored)	2017-05-30	kkmrkkblmbrbk	7199C4DC8422DBD2	1781515

PRP Cofactor

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-10-07	GAN	6958739FDAD00F0F	1	896856	5	3

History

Date	User	Type	Result
2021-10-07	Jorge Coveiro	CERT	PRP Certification Proof certified good
2021-10-07	GAN	C-PRP	M2075833/3940167732016334942303 : 6958739FDAD00F0F PRP proof power = 7 PRP: Verified Proof certified good
2021-10-05	GAN	F-ECM	Factor: 3940167732016334942303 / (ECM curve 7, B1=50000, B2=5000000, Sigma=3995419300442220)
2021-07-29	TJAOI	NF	no factor from 2^68 to 2^69
2019-09-10	mikr	NF-PM1	B1=4000000, B2=200000000, E=12
2019-03-29	chuenkit	NF	no factor from 2^67 to 2^68
2018-09-28	Joss	NF-PM1	B1=2257078, B2=20758330, E=12
2018-02-23	Joss	NF-PM1	B1=2257078, B2=4514156, E=6
2017-05-30	kkmrkkblmbrbk	C-LL	7199C4DC8422DBD2
2016-09-24	Joss	NF-PM1	B1=2247078, B2=8988312, E=6
2016-09-10	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-07-06	Joss	NF-PM1	B1=2247078, B2=4494156, E=6
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-10-21	omylist	NF	no factor from 2^65 to 2^66
2015-07-07	Joss	NF-PM1	B1=2247078
2015-06-25	Joss	NF-PM1	B1=2042799
2015-06-08	Joss	NF-PM1	B1=1857090
2015-05-26	Joss	NF-PM1	B1=1688264
2015-05-22	Joss	NF-PM1	B1=1534786
2015-05-07	Joss	NF-PM1	B1=1395260
2015-05-01	Joss	NF-PM1	B1=1268419
2015-04-08	Joss	NF-PM1	B1=1048281
2015-03-28	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-28	VictordeHollander	NF	no factor from 2^63 to 2^64
2015-03-15	Joss	NF-PM1	B1=866349
2015-03-12	Joss	NF-PM1	B1=787590
2015-03-03	Joss	NF-PM1	B1=715991
2015-02-25	Joss	NF-PM1	B1=650901
2015-02-16	Joss	NF-PM1	B1=591729
2015-02-14	Joss	NF-PM1	B1=537936
2015-02-11	Joss	NF-PM1	B1=404160
2015-01-31	Joss	NF-PM1	B1=250954
2015-01-30	Joss	NF-PM1	B1=228140
2015-01-29	Joss	NF-PM1	B1=207400
2014-11-10	Joss	NF-PM1	B1=165920
2013-09-01	ramgeis	NF	no factor from 2^62 to 2^63
2012-03-16	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-01-20	James Heinrich	NF-PM1	B1=135000, B2=3071250, E=6
2011-01-07	Joss	NF-PM1	B1=50000
2010-12-28	Joss	NF-PM1	B1=30000
2009-07-25	USAFSS	NF-PM1	B1=20000, B2=260000
2009-01-03	Sturle Sunde	NF	no factor from 2^60 to 2^61

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