diff --git a/05-isPrime/index.js b/05-isPrime/index.js
index ec9c4ac..a3f934d 100644
--- a/05-isPrime/index.js
+++ b/05-isPrime/index.js
@@ -1,4 +1,17 @@
 export function isPrime(value) {
   // implementar logica aqui
   
+  let div = 0;
+
+  for(let i = 0; i <= value; i++){
+      if(value % i === 0){
+          div++;
+      }
+  }
+
+  if (div === 2){
+      return true;
+  }
+
+  return false;
 }
\ No newline at end of file