5 308 291 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 1 known prime factor. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
15539259572682489023	20	63.8	2010-09-08 10:34:27

Status	Date	User	Residue	Shift
Verified (Factored)	1998-08-16	Gerhard H Wrodnigg	E4926DEA3E357E31	0
Verified (Factored)	2000-06-11	David Linton	E4926DEA3E357E31	3305341

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-11-26	kkmrkkblmbrbk	5D5E36091666471B	1	3705905	5	3
Verified	2018-06-14	Oliver Kruse	5D5E36091666471B	1	366634	5	3

History

Date	User	Type	Result
2025-04-06	Sid & Andy	NF	no factor from 2^68 to 2^70
2024-08-17	cramsey87	NF-PM1	B1=1000000, B2=711146040
2018-06-14	Oliver Kruse	C-PRP	M5308291/15539259572682489023 : 5D5E36091666471B PRP: Verified PRP without proof (not generated)
2017-11-26	kkmrkkblmbrbk	C-PRP	M5308291/15539259572682489023 : 5D5E36091666471B PRP: Verified PRP without proof (not generated)
2010-09-08	Squeeky_Squirrel	F	Factor: 15539259572682489023
2009-08-26	Carsten Kossendey	NF-PM1	B1=25000, B2=343750
2009-05-30	GrunwalderGIMP	NF	no factor from 2^62 to 2^63