2 757 617 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
7487051004891945470527943089	28	92.6	2016-12-30 08:42:00

ECM

Digits	B1	Curves
25	50000	18 / 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)		shelley giles	443A9FCE8B25FC7E	0
Verified (Factored)	1999-08-07	Jordi Vicedo	443A9FCE8B25FC7E	861110

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-20	Oliver Kruse	13E4EC38A0C9176F	1	1945484	5	3
Verified	2017-12-05	kkmrkkblmbrbk	13E4EC38A0C9176F	1	1392604	5	3

P-1 factors

Date	Factor	B1	B2
2016-12-30	7487051004891945470527943089	2700000	84000000

History

Date	User	Type	Result
2017-12-05	kkmrkkblmbrbk	C-PRP	M2757617/7487051004891945470527943089 : 13E4EC38A0C9176F PRP: Verified PRP without proof (not generated)
2017-10-20	Oliver Kruse	C-PRP	M2757617/7487051004891945470527943089 : 13E4EC38A0C9176F PRP: Verified PRP without proof (not generated)
2017-01-10	Joss	NF-PM1	B1=228000
2016-12-30	mikr	F-PM1	Factor: 7487051004891945470527943089 / (P-1, B1=2700000, B2=84000000, E=12)
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2016-02-05	ramgeis	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
2012-03-26	markr	NF	no factor from 2^61 to 2^62
2011-05-08	James Heinrich	NF-PM1	B1=190000, B2=4655000, E=6
2011-01-23	Joss	NF-PM1	B1=50000
2011-01-02	Joss	NF-PM1	B1=30000
2010-12-21	Joss	NF-PM1	B1=20000
2009-02-14	Sturle Sunde	NF	no factor from 2^60 to 2^61