2 543 249 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
13317260328390416115943	23	73.5	2020-07-01 18:54:09

ECM

Digits	B1	Curves
25	50000	41 / 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)		Thomas Honold	CACCCD5517D7F2FB	0
Verified (Factored)	1999-04-02	Adrian Dacunha	CACCCD5517D7F2FB	2464030
Verified (Factored)	2018-06-10	kkmrkkblmbrbk	CACCCD5517D7F2FB	2080723

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-07-02	mrh	D9DD30CCA8C23FE5	1	1812192	5	3
Verified	2020-07-03	marssystems	D9DD30CCA8C23FE5	1	505514	5	3

History

Date	User	Type	Result
2020-07-03	marssystems	C-PRP	M2543249/13317260328390416115943 : D9DD30CCA8C23FE5 PRP: Verified PRP without proof (not generated)
2020-07-02	mrh	C-PRP	M2543249/13317260328390416115943 : D9DD30CCA8C23FE5 PRP: Verified PRP without proof (not generated)
2020-07-01	daveward2005	F-ECM	Factor: 13317260328390416115943 / (ECM curve 2, B1=50000, B2=5000000)
2019-04-08	TJAOI	NF	no factor from 2^67 to 2^68
2018-09-19	mikr	NF-PM1	B1=3000000, B2=135000000, E=12
2018-08-13	Joss	NF-PM1	B1=600000, B2=6000000, E=6
2018-06-10	kkmrkkblmbrbk	C-LL	CACCCD5517D7F2FB
2017-08-08	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
2015-11-08	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
2012-06-15	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-02-28	James Heinrich	NF-PM1	B1=300000, B2=8000000, E=12
2011-01-07	Joss	NF-PM1	B1=50000
2011-01-03	Joss	NF-PM1	B1=30000
2010-12-19	Joss	NF-PM1	B1=20000
2009-01-31	Sturle Sunde	NF	no factor from 2^60 to 2^61