4 882 327 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
8572155743441460475391	22	72.9	2009-08-25 05:09:22

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)		Guido Stolz	63E30DD49C2A22E4	0
Verified (Factored)	2000-05-10	Chris Blaschuk	63E30DD49C2A22E4	3967538

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-20	kkmrkkblmbrbk	17D1547128B57A68	1	0	1	3
Verified	2018-04-02	Oliver Kruse	17D1547128B57A68	1	1302761	1	3

History

Date	User	Type	Result
2023-09-01	USAFSS	NF-PM1	B1=256000, B2=105522060
2018-04-02	Oliver Kruse	C-PRP	M4882327/8572155743441460475391 : 17D1547128B57A68 PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M4882327/8572155743441460475391 : 17D1547128B57A68 PRP: Verified PRP without proof (not generated)
2009-08-25	Carsten Kossendey	F-PM1	Factor: 8572155743441460475391