diff --git a/05-isPrime/index.js b/05-isPrime/index.js
index ec9c4ac..c7c0377 100644
--- a/05-isPrime/index.js
+++ b/05-isPrime/index.js
@@ -1,4 +1,9 @@
 export function isPrime(value) {
   // implementar logica aqui
+  for(let i = 2; i < value; i++) {
+    if(value % i === 0) return false;
+    else if(value === 2) return true;
+  }
   
+  return value > 1;
 }
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