project-euler/Sidef/003 Largest prime factor.sf

#!/usr/bin/ruby

# Author: Daniel "Trizen" Șuteu
# License: GPLv3
# Website: https://github.com/trizen

# The prime factors of 13195 are 5, 7, 13 and 29.
# What is the largest prime factor of the number 600851475143 ?

# https://projecteuler.net/problem=3

# Runtime: 0.128s

say gpf(600851475143)