2 774 957 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
5238622118569976653609	22	72.1	2017-01-25 10:52:15

ECM

Digits	B1	Curves
25	50000	19 / 280

Estimated T-Level: 20.3 ⓘ

TF below 2^63 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Kim Neve	7439BF57700D3EED	0
Verified (Factored)	1999-05-02	Ian R Lowman	7439BF57700D3EED	271913

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-21	Oliver Kruse	8083E7E04A6149BB	1	1229536	5	3
Verified	2017-12-06	kkmrkkblmbrbk	8083E7E04A6149BB	1	1134467	5	3

History

Date	User	Type	Result
2023-02-26	USAFSS	NF-PM1	B1=300000, B2=235127970
2017-12-06	kkmrkkblmbrbk	C-PRP	M2774957/5238622118569976653609 : 8083E7E04A6149BB PRP: Verified PRP without proof (not generated)
2017-10-21	Oliver Kruse	C-PRP	M2774957/5238622118569976653609 : 8083E7E04A6149BB PRP: Verified PRP without proof (not generated)
2017-02-25	Joss	NF-PM1	B1=294451, B2=2944510, E=6
2017-01-25	bam	F-ECM	Factor: 5238622118569976653609 / (ECM curve 1, B1=50000, B2=5000000)
2016-12-23	Joss	NF-PM1	B1=204480
2016-10-26	Joss	NF-PM1	B1=170400
2016-08-27	Joss	NF-PM1	B1=142000, B2=4785000, E=6
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2015-12-07	omylist	NF	no factor from 2^65 to 2^66
2015-04-21	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-04-21	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-10	dbaugh	NF	no factor from 2^62 to 2^63
2012-03-24	Grant McCracken	NF	no factor from 2^61 to 2^62
2010-11-28	markr	NF-PM1	B1=110000, B2=2392500, E=6
2010-11-10	Joss	NF-PM1	B1=15000
2009-01-29	Sturle Sunde	NF	no factor from 2^60 to 2^61