diff --git a/05-isPrime/index.js b/05-isPrime/index.js
index ec9c4ac..ad1c382 100644
--- a/05-isPrime/index.js
+++ b/05-isPrime/index.js
@@ -1,4 +1,13 @@
 export function isPrime(value) {
   // implementar logica aqui
-  
+  if(value === 1){
+    return false
+  }else{
+    for(let divisor = 2; divisor < value; divisor++){
+      if((value%divisor === 0)){
+          return false
+      }
+    }
+  }
+  return true
 }
\ No newline at end of file