diff --git a/src/main.rs b/src/main.rs
index 7a97081..9727b0d 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -9,7 +9,7 @@ const MAX_SIEVED_PRIMES: usize = 100_000_000;
 fn count_prime_factor_exponent(prime: u64, mut nr: u64) -> u64 {
     let mut count = 0;
 
-    while nr % prime == 0 {
+    while nr.is_multiple_of(prime) {
         nr /= prime;
         count += 1;
     }