2 076 161 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

2076161

Factored

Factor	Digits	Bits	Date
31840568463089992742234671	26	84.7	2020-07-25 07:28:32

ECM

Digits	B1	Curves
25	50000	114 / 280

Estimated T-Level: 22.0 ⓘ

TF below 2^68 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Simon Rubinstein-Salzedo	A30C9774A3661DC1	0
Verified (Factored)	1999-03-15	Michael Collier	A30C9774A3661DC1	483027
Verified (Factored)	2017-06-05	kkmrkkblmbrbk	A30C9774A3661DC1	694578

PRP Cofactor

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-07-29	Klaus Nordmann	8F49CCB9EA8F130B	1	1860793	5	3
Verified	2020-07-30	pew	8F49CCB9EA8F130B	1	963616	5	3

History

Date	User	Type	Result
2020-07-30	pew	C-PRP	M2076161/31840568463089992742234671 : 8F49CCB9EA8F130B PRP: Verified PRP without proof (not generated)
2020-07-29	Klaus Nordmann	C-PRP	M2076161/31840568463089992742234671 : 8F49CCB9EA8F130B PRP: Verified PRP without proof (not generated)
2020-07-25	GAN	F-ECM	Factor: 31840568463089992742234671 / (ECM curve 3, B1=50000, B2=5000000, Sigma=1176361261058116)
2019-09-11	mikr	NF-PM1	B1=4000000, B2=200000000, E=12
2019-03-29	chuenkit	NF	no factor from 2^67 to 2^68
2018-02-23	Joss	NF-PM1	B1=2256995, B2=4513990, E=6
2017-06-05	kkmrkkblmbrbk	C-LL	A30C9774A3661DC1
2016-09-24	Joss	NF-PM1	B1=2246995, B2=8987980, E=6
2016-09-10	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-07-06	Joss	NF-PM1	B1=2246995, B2=4493990, E=6
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-11-05	ramgeis	NF	no factor from 2^65 to 2^66
2015-07-07	Joss	NF-PM1	B1=2246995
2015-06-25	Joss	NF-PM1	B1=2042723
2015-06-08	Joss	NF-PM1	B1=1857021
2015-05-26	Joss	NF-PM1	B1=1688201
2015-05-22	Joss	NF-PM1	B1=1534729
2015-05-07	Joss	NF-PM1	B1=1395209
2015-05-01	Joss	NF-PM1	B1=1268372
2015-04-08	Joss	NF-PM1	B1=1048242
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=866317
2015-03-12	Joss	NF-PM1	B1=787561
2015-03-03	Joss	NF-PM1	B1=715965
2015-02-25	Joss	NF-PM1	B1=650878
2015-02-16	Joss	NF-PM1	B1=591708
2015-02-14	Joss	NF-PM1	B1=537917
2015-02-12	Joss	NF-PM1	B1=444560
2015-02-02	Joss	NF-PM1	B1=276039
2015-02-01	Joss	NF-PM1	B1=250945
2015-01-30	Joss	NF-PM1	B1=228132
2015-01-29	Joss	NF-PM1	B1=207393
2014-11-10	Joss	NF-PM1	B1=165915
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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