2 724 047 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
13165117530791749610831	23	73.5	2021-01-20 09:39:37

ECM

Digits	B1	Curves
25	50000	77 / 280

Estimated T-Level: 21.4 ⓘ

TF below 2^66 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Dax Prather	D33CE1688BB4A8F1	0
Verified (Factored)	1998-07-21	Steve Menyhert	D33CE1688BB4A8F1	0
Verified (Factored)	1999-05-23	Norm Bussiere	D33CE1688BB4A8F1	2215188

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-01-20	riccardo uberti	ECCF9C5676B86ECF	1	2219294	5	3

History

Date	User	Type	Result
2023-04-18	Kevin_9611	NF-PM1	B1=720000, B2=868549500
2021-01-20	osa16	CERT	PRP Certification Proof certified good
2021-01-20	riccardo uberti	C-PRP	M2724047/13165117530791749610831 : ECCF9C5676B86ECF PRP proof power = 7 PRP: Verified Proof certified good
2021-01-20	nordi	F-ECM	Factor: 13165117530791749610831 / (ECM curve 3, B1=50000, B2=6750000, Sigma=2265507665740068)
2019-02-12	chuenkit	NF	no factor from 2^67 to 2^68
2018-08-20	Joss	NF-PM1	B1=600000, B2=6000000, E=6
2017-10-05	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
2016-01-31	ramgeis	NF	no factor from 2^65 to 2^66
2015-04-13	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-04-13	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-14	dbaugh	NF	no factor from 2^62 to 2^63
2012-04-18	Grant McCracken	NF	no factor from 2^61 to 2^62
2011-02-24	James Heinrich	NF-PM1	B1=300000, B2=8000000, E=12
2011-01-18	Joss	NF-PM1	B1=50000
2010-12-28	Joss	NF-PM1	B1=30000
2010-12-19	Joss	NF-PM1	B1=20000
2009-01-28	Sturle Sunde	NF	no factor from 2^60 to 2^61