3 255 559 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
3179897262906244597247	22	71.4	2021-03-26 10:07:44

ECM

Digits	B1	Curves
25	50000	32 / 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)	1998-02-01	Terry S. Arnold	F7D3E61ABA481BCF	0
Verified (Factored)	1999-11-04	Rommel C. Zulueta	F7D3E61ABA481BCF	2289273

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-03-28	daveward2005	5CF2648B04E08EFF	1	831207	5	3

History

Date	User	Type	Result
2022-09-12	Joss	NF-PM1	B1=1000000, B2=241152450
2022-04-02	Joss	NF-PM1	B1=1000000, B2=134316000
2021-03-28	Ben Delo	CERT	PRP Certification Proof certified good
2021-03-28	daveward2005	C-PRP	M3255559/3179897262906244597247 : 5CF2648B04E08EFF PRP proof power = 7 PRP: Verified Proof certified good
2021-03-26	daveward2005	F-ECM	Factor: 3179897262906244597247 / (ECM curve 5, B1=50000, B2=5000000, Sigma=8574274360813117)
2020-08-13	mikr	NF-PM1	B1=4000000, B2=150000000, E=12
2019-01-07	TJAOI	NF	no factor from 2^67 to 2^68
2017-03-29	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-01-17	Joss	NF-PM1	B1=415800, B2=4158000, E=6
2015-06-28	Tha	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
2014-10-07	Joss	NF-PM1	B1=99430
2014-06-11	Joss	NF-PM1	B1=79715
2013-01-03	dbaugh	NF	no factor from 2^62 to 2^63
2011-09-18	markr	NF	no factor to 2^62
2011-09-13	USAFSS	NF-PM1	B1=60000, B2=1050000, E=6
2009-07-05	Carsten Kossendey	NF-PM1	B1=15000, B2=191250
2009-04-03	S485122	NF	no factor from 2^60 to 2^61