2 073 607 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

2073607

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

Factored

Factor	Digits	Bits	Date
3655832037422028648778567	25	81.6	2020-03-11 09:39:22

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	170 / 640

Estimated T-Level: 26.3 ⓘ

TF below 2^82 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Travis Masoner	C8EC5556733644BC	0
Verified (Factored)	1999-01-29	Zach Neal	C8EC5556733644BC	984002
Verified (Factored)	2017-05-28	kkmrkkblmbrbk	C8EC5556733644BC	2050426

PRP Cofactor

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-03-12	Jinyuan Wang	B4A3AB70EDA34E79	1	554932	5	3
Verified	2020-03-12	GunnarLu	B4A3AB70EDA34E79	1	1934714	5	3

History

Date	User	Type	Result
2020-03-12	GunnarLu	C-PRP	M2073607/3655832037422028648778567 : B4A3AB70EDA34E79 PRP: Verified PRP without proof (not generated)
2020-03-12	Jinyuan Wang	C-PRP	M2073607/3655832037422028648778567 : B4A3AB70EDA34E79 PRP: Verified PRP without proof (not generated)
2020-03-11	Sergey Nosov	F-ECM	Factor: 3655832037422028648778567 / (ECM curve 1, B1=50000, B2=5000000)
2019-09-03	mikr	NF-PM1	B1=4000000, B2=200000000, E=12
2019-03-28	chuenkit	NF	no factor from 2^67 to 2^68
2018-11-11	Joss	NF-PM1	B1=2257531, B2=41472140, E=6
2018-09-28	Joss	NF-PM1	B1=2257531, B2=20736070, E=12
2018-02-23	Joss	NF-PM1	B1=2257531, B2=4515062, E=6
2017-05-28	kkmrkkblmbrbk	C-LL	C8EC5556733644BC
2016-09-24	Joss	NF-PM1	B1=2247531, B2=8990124, E=6
2016-09-10	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-07-06	Joss	NF-PM1	B1=2247531, B2=4495062, 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=2247531
2015-06-25	Joss	NF-PM1	B1=2043210
2015-06-08	Joss	NF-PM1	B1=1857464
2015-05-26	Joss	NF-PM1	B1=1688604
2015-05-22	Joss	NF-PM1	B1=1535095
2015-05-01	Joss	NF-PM1	B1=1395541
2015-04-08	Joss	NF-PM1	B1=1153340
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=866522
2015-03-12	Joss	NF-PM1	B1=787748
2015-03-02	Joss	NF-PM1	B1=716135
2015-02-25	Joss	NF-PM1	B1=651032
2015-02-16	Joss	NF-PM1	B1=591848
2015-02-14	Joss	NF-PM1	B1=538044
2015-02-11	Joss	NF-PM1	B1=404241
2015-01-31	Joss	NF-PM1	B1=251003
2015-01-30	Joss	NF-PM1	B1=228185
2015-01-29	Joss	NF-PM1	B1=207441
2014-11-06	Joss	NF-PM1	B1=165953
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
2010-12-26	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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