oily-solutions/largest_prime_factor.rs

19 lines
392 B
Rust

fn main() {
let mut num: u64 = 600851475143;
let mut factors: Vec<u64> = vec![];
let mut i: u64 = 2;
while i.pow(2) <= num {
if num % i == 0 {
factors.push(i);
num = (num as f64 / i as f64).floor() as u64;
} else {
i += 1;
}
}
if num != 1 {
factors.push(num);
}
println!("{:?}", factors);
}