diff --git a/primes/README.md b/primes/README.md
index cb38d83..ccf58c3 100644
--- a/primes/README.md
+++ b/primes/README.md
@@ -7,5 +7,5 @@ Printing time is not included.
 | ---------| -------|
 | Java     | 1836ms |
 | Javascript | 1778ms |
-| Rust      | 577ms |
-| python3 | 34361ms |
\ No newline at end of file
+| Rust      | 577ms (different PC) |
+| python3 | 34361ms |
diff --git a/primes/java/src/DefaultPrimes.java b/primes/java/src/DefaultPrimes.java
index cf2021a..f51b9f0 100644
--- a/primes/java/src/DefaultPrimes.java
+++ b/primes/java/src/DefaultPrimes.java
@@ -10,7 +10,7 @@ public class DefaultPrimes implements Primes {
 
         primesList.add(2);
 
-        for (int i = 3; i < max; i += 2) { //go through all numbers
+        for (int i = 3; i < max; i++) { //go through all numbers
             boolean isPrime = true;
             double sqrRoot = Math.sqrt(i);
             for (int j = 0; j < primesList.size(); j++) { //test each number
diff --git a/primes/rust/src/main.rs b/primes/rust/src/main.rs
index 8025902..bd1ffdc 100644
--- a/primes/rust/src/main.rs
+++ b/primes/rust/src/main.rs
@@ -25,9 +25,8 @@ fn primes(max: u32) -> Vec<u32> {
     primes_list.push(2);
 
     for mut i in 3..max {
-        let sqr_root: u32 = (i as f64).sqrt() as u32;
         for prime in &primes_list { //test each number
-            if *prime > sqr_root {
+            if *prime > (i as f64).sqrt() as u32 {
                 primes_list.push(i);
                 break;
             }
@@ -35,7 +34,6 @@ fn primes(max: u32) -> Vec<u32> {
                 break;
             }
         }
-        i += 1
     }
 
     primes_list