6 441 563 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
5194886921085726528017	22	72.1	2011-12-12 18:48:33

ECM

Digits	B1	Curves
25	50000	3 / 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)	1999-08-16	Paul Rafferty	03C363164C1FDA86	0
Verified (Factored)	2001-10-20	Jeff Mears	03C363164C1FDA86	2604032

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-12-17	Oliver Kruse	C8C1C0B0C46EA299	1	6164231	5	3
Verified	2018-07-16	kkmrkkblmbrbk	C8C1C0B0C46EA299	1	4971566	5	3

History

Date	User	Type	Result
2023-05-11	This -Anonymous-	NF-PM1	B1=100000, B2=2000000, E=6
2018-07-16	kkmrkkblmbrbk	C-PRP	M6441563/5194886921085726528017 : C8C1C0B0C46EA299 PRP: Verified PRP without proof (not generated)
2017-12-17	Oliver Kruse	C-PRP	M6441563/5194886921085726528017 : C8C1C0B0C46EA299 PRP: Verified PRP without proof (not generated)
2011-12-12	JimBa	F-ECM	Factor: 5194886921085726528017