2 658 301 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
503443295594036910971303	24	78.7	2020-07-23 03:17:07

ECM

Digits	B1	Curves
25	50000	39 / 280

Estimated T-Level: 20.7 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)		Christopher Mulliss	D40C135C43FE9D33	0
Verified (Factored)	1999-04-02	Alan Frederick	D40C135C43FE9D33	2057342
Verified (Factored)	2018-07-21	kkmrkkblmbrbk	D40C135C43FE9D33	2490882

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-07-23	M Miller	A47040DEA2382C18	1	1262053	5	3
Verified	2020-07-23	ATH	A47040DEA2382C18	1	2323076	5	3

History

Date	User	Type	Result
2020-07-23	ATH	C-PRP	M2658301/503443295594036910971303 : A47040DEA2382C18 PRP: Verified PRP without proof (not generated)
2020-07-23	M Miller	C-PRP	M2658301/503443295594036910971303 : A47040DEA2382C18 PRP: Verified PRP without proof (not generated)
2020-07-23	GAN	F-ECM	Factor: 503443295594036910971303 / (ECM curve 3, B1=50000, B2=5000000, Sigma=4352695967823129)
2019-11-26	masser	NF-PM1	B1=2000000, B2=50000000, E=12
2019-05-13	TJAOI	NF	no factor from 2^67 to 2^68
2018-07-21	kkmrkkblmbrbk	C-LL	D40C135C43FE9D33
2017-09-19	Joss	NF-PM1	B1=600000, B2=6000000, E=6
2017-09-13	Joss	NF-PM1	B1=500000, B2=5000000, E=6
2017-09-08	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^59 to 2^60
2016-01-22	ramgeis	NF	no factor from 2^65 to 2^66
2015-02-23	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-23	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-14	dbaugh	NF	no factor from 2^62 to 2^63
2012-05-24	markr	NF	no factor from 2^61 to 2^62
2011-01-19	James Heinrich	NF-PM1	B1=250000, B2=8000000, E=12
2009-06-23	USAFSS	NF-PM1	B1=30000, B2=420000
2009-01-27	Sturle Sunde	NF	no factor from 2^60 to 2^61