5 871 403 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 3 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
798510809	9	29.6	old
3128885065866481759	19	61.4	2016-04-28 11:04:36
20928048649609867399	20	64.2	2017-08-07 11:22:47

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-28	alpertron	FA77E1A87C12795F	3	0	1	3
Verified	2018-04-16	kkmrkkblmbrbk	FA77E1A87C12795F	3	1071844	1	3

History

Date	User	Type	Result
2025-08-25	Sid & Andy	NF-PM1	B1=3300000, B2=6742848840
2023-05-12	This -Anonymous-	NF-PM1	B1=50000, B2=1000000, E=6
2022-06-22	LordJulius	NF	no factor from 2^63 to 2^64
2022-06-22	LordJulius	NF	no factor from 2^62 to 2^63
2018-04-16	kkmrkkblmbrbk	C-PRP	M5871403/798510809/3128885065866481759/20928048649609867399 : FA77E1A87C12795F PRP: Verified PRP without proof (not generated)
2017-09-28	alpertron	C-PRP	M5871403/20928048649609867399/3128885065866481759/798510809 : FA77E1A87C12795F PRP: Verified PRP without proof (not generated)
2017-08-07	TJAOI	F	Factor: 20928048649609867399 / TF: 64-65
2016-04-28	TJAOI	F	Factor: 3128885065866481759 / TF: 61-62