5 575 861 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
618723640194762039911	21	69.1	2015-07-19 01:49:48

ECM

Digits	B1	Curves
25	50000	5 / 280

Estimated T-Level: 20.1 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Brian Pinto	B756AFC7E1E0F706	0
Verified (Factored)	2000-10-07	Göran Axelsson	B756AFC7E1E0F706	1317943

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-12-09	Oliver Kruse	E73C566D20D264AB	1	2434386	5	3
Verified	2018-04-03	kkmrkkblmbrbk	E73C566D20D264AB	1	4573163	5	3

History

Date	User	Type	Result
2018-04-03	kkmrkkblmbrbk	C-PRP	M5575861/618723640194762039911 : E73C566D20D264AB PRP: Verified PRP without proof (not generated)
2017-12-09	Oliver Kruse	C-PRP	M5575861/618723640194762039911 : E73C566D20D264AB PRP: Verified PRP without proof (not generated)
2015-07-19	Sid & Andy	F-ECM	Factor: 618723640194762039911
2014-12-21	monst	NF	no factor from 2^64 to 2^65
2014-12-20	Nesowa	NF	no factor from 2^63 to 2^64
2010-11-13	Squeeky_Squirrel	NF-PM1	B1=65000, B2=1023750, E=6
2009-06-06	Carsten Kossendey	NF-PM1	B1=30000, B2=390000
2009-02-10	GrunwalderGIMP	NF	no factor from 2^62 to 2^63