8 455 241 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 2 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
3703395559	10	31.8	old
748035171271	12	39.4	2008-09-08 04:33:26

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2018-11-02	Oliver Kruse	215477CB03963ABD	2	1958164	5	3
Verified	2020-06-05	Luigi Morelli	215477CB03963ABD	2	501466	5	3

History

Date	User	Type	Result
2024-05-14	Stef42	NF-PM1	B1=1055000, B2=1209731250
2020-06-05	Luigi Morelli	C-PRP	M8455241/3703395559/748035171271 : 215477CB03963ABD PRP: Verified PRP without proof (not generated)
2018-11-02	Oliver Kruse	C-PRP	M8455241/3703395559/748035171271 : 215477CB03963ABD PRP: Verified PRP without proof (not generated)
2008-09-08	Will Edgington	F	Factor: 748035171271