diff --git a/05-isPrime/index.js b/05-isPrime/index.js
index ec9c4ac..9959aee 100644
--- a/05-isPrime/index.js
+++ b/05-isPrime/index.js
@@ -1,4 +1,9 @@
 export function isPrime(value) {
   // implementar logica aqui
-  
+  for (let n = 2; n < value; n++)
+    if (value % n === 0){
+      return false   
+     }
+  return value > 1
+ 
 }
\ No newline at end of file