2 732 357 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
67626238231153087848881	23	75.8	2021-07-23 05:08:06

ECM

Digits	B1	Curves
25	50000	109 / 280

Estimated T-Level: 21.9 ⓘ

TF below 2^68 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		hans stiegler	933F59AD52C83CFA	0
Verified (Factored)	1999-06-06	Kosei Eguchi	933F59AD52C83CFA	86083
Verified (Factored)	2018-08-09	kkmrkkblmbrbk	933F59AD52C83CFA	162112

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-07-23	SRJ2877	56B947DAB0BAFC19	1	986600	5	3

History

Date	User	Type	Result
2021-07-24	Ben Delo	CERT	PRP Certification Proof certified good
2021-07-23	SRJ2877	C-PRP	M2732357/67626238231153087848881 : 56B947DAB0BAFC19 PRP proof power = 7 PRP: Verified Proof certified good
2021-07-23	daveward2005	F-ECM	Factor: 67626238231153087848881 / (ECM curve 7, B1=50000, B2=5000000, Sigma=2027872433969927)
2021-06-04	Numberwang	NF-PM1	B1=1000000, B2=30000000
2019-02-15	chuenkit	NF	no factor from 2^67 to 2^68
2018-08-09	kkmrkkblmbrbk	C-LL	933F59AD52C83CFA
2018-07-04	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 2^1 to 2^60
2016-02-02	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
2013-01-10	dbaugh	NF	no factor from 2^62 to 2^63
2012-04-10	markr	NF	no factor from 2^61 to 2^62
2011-02-28	James Heinrich	NF-PM1	B1=300000, B2=8000000, E=12
2011-01-19	Joss	NF-PM1	B1=50000
2010-12-28	Joss	NF-PM1	B1=30000
2010-12-19	Joss	NF-PM1	B1=20000
2009-01-27	Sturle Sunde	NF	no factor from 2^60 to 2^61