diff --git a/Maths/PrimeCheck.js b/Maths/PrimeCheck.js
index 5a9e212d7..0922c97ab 100644
--- a/Maths/PrimeCheck.js
+++ b/Maths/PrimeCheck.js
@@ -12,6 +12,7 @@ const PrimeCheck = (n) => {
   if (n === 1) return false
   if (n === 0) return false
   if (n === 2) return true
+  if (n % 2 === 0) return false
 
   for (let i = 3; i * i <= n; i += 2) {
     if (n % i === 0) {