2 609 219 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
2971733943226964222276911	25	81.3	2020-07-05 08:23:06

ECM

Digits	B1	Curves
25	50000	35 / 280

Estimated T-Level: 20.6 ⓘ

TF below 2^64 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		David Willmore	13E5844DCD6B5333	0
Bad		David Willmore	8E9C2267B4480722	0
Verified (Factored)	1997-12-30	Chad Davis	13E5844DCD6B5333	0
Bad	1999-04-23	Stephen Wood	C0F6C7931C238B64	2418511
Verified (Factored)	2000-01-19	Rob Simons	13E5844DCD6B5333	1872402

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-07-05	M Miller	3AB5B9E1C4D4FB00	1	1545545	5	3
Verified	2020-07-12	Nesowa	3AB5B9E1C4D4FB00	1	562487	5	3

History

Date	User	Type	Result
2020-07-12	Nesowa	C-PRP	M2609219/2971733943226964222276911 : 3AB5B9E1C4D4FB00 PRP: Verified PRP without proof (not generated)
2020-07-05	M Miller	C-PRP	M2609219/2971733943226964222276911 : 3AB5B9E1C4D4FB00 PRP: Verified PRP without proof (not generated)
2020-07-05	GAN	F-ECM	Factor: 2971733943226964222276911 / (ECM curve 2, B1=50000, B2=5000000, Sigma=5634809928980302)
2019-12-06	BigBrother	NF-PM1	B1=3000000, B2=90000000, E=12
2019-12-03	masser	NF-PM1	B1=2000000, B2=50000000, E=12
2019-05-06	TJAOI	NF	no factor from 2^67 to 2^68
2017-08-24	Gordon Spence	NF	no factor from 2^66 to 2^67
2017-07-10	Joss	NF-PM1	B1=400000, B2=4000000, E=6
2016-05-19	Joss	NF-PM1	B1=200000, B2=3600000, E=6
2016-02-23	Mark Rose	NF	no factor from 2^59 to 2^60
2016-01-16	ramgeis	NF	no factor from 2^65 to 2^66
2015-02-18	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-18	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-10-10	Joss	NF-PM1	B1=124599
2013-01-14	dbaugh	NF	no factor from 2^62 to 2^63
2012-06-30	Grant McCracken	NF	no factor from 2^61 to 2^62
2010-12-15	markr	NF-PM1	B1=100000, B2=2125000, E=6
2010-11-17	Joss	NF-PM1	B1=20000
2009-01-31	Sturle Sunde	NF	no factor from 2^60 to 2^61