pub fn prime_factors(num: u64) -> Vec<u64>Expand description
Returns the prime factors of the given argument.
assert_eq!(prime_factors(126), [2, 3, 3, 7]);
assert_eq!(prime_factors(12345), [3, 5, 823]);
assert_eq!(prime_factors(2 * 3 * 5 * 7 * 11), [2, 3, 5, 7, 11]);