diff --git a/PULL_REQUEST_TEMPLATE.md b/PULL_REQUEST_TEMPLATE.md
index 2449150..542454b 100644
--- a/PULL_REQUEST_TEMPLATE.md
+++ b/PULL_REQUEST_TEMPLATE.md
@@ -1,10 +1,10 @@
 ## DESCRIPTION
 
-Nombre:
-Usuario Platzi:
+Nombre: nahum
+Usuario Platzi: nahum_1_121@hotmail.com
 
 ## Reto:
 
-- [ ] Primer problema
-- [ ] Segundo problema
-- [ ] Tercer problema
+- [x] Primer problema
+- [x] Segundo problema
+- [x] Tercer problema
diff --git a/package-lock.json b/package-lock.json
index fd061e8..92817cd 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,15 +1,15 @@
 {
-  "name": "challenge-js-03",
+  "name": "javascript-challenges",
   "version": "1.0.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
-      "name": "challenge-js-03",
+      "name": "javascript-challenges",
       "version": "1.0.0",
       "license": "MIT",
       "devDependencies": {
-        "jest": "^29.0.1"
+        "jest": "29.0.1"
       }
     },
     "node_modules/@ampproject/remapping": {
diff --git a/src/factorial.js b/src/factorial.js
index 4f3ae70..0234c53 100644
--- a/src/factorial.js
+++ b/src/factorial.js
@@ -1,5 +1,12 @@
 const factorial = (number) => {
-  // your code here
+  var result = number;
+  if (number === 0 || number === 1) 
+    return 1; 
+  while (number > 1) { 
+    number--;
+    result *= number;
+  }
+  return result;
 }
 
 module.exports = factorial;
\ No newline at end of file
diff --git a/src/fibonacci.js b/src/fibonacci.js
index ea3270f..2323637 100644
--- a/src/fibonacci.js
+++ b/src/fibonacci.js
@@ -1,5 +1,22 @@
 const fibonacci = (n) => {
-  // your code here
+
+  if (!n) return;
+
+  var fibArr = [1];
+
+  if (n === 1) {
+    console.log(fibArr);
+    return fibArr;
+  }
+
+  fibArr.push(1);
+
+  for(var i = 2, len = n; i < len; i++) {
+    fibArr.push(fibArr[i-1] + fibArr[i-2]);
+  }
+  console.log(fibArr);
+  return fibArr;
+  
 }
 
 module.exports = fibonacci;
\ No newline at end of file
diff --git a/src/primalidad.js b/src/primalidad.js
index 8bdb849..1a7a6b5 100644
--- a/src/primalidad.js
+++ b/src/primalidad.js
@@ -1,5 +1,25 @@
 const trialDivision = (number) => {
-  // your code here
+  if(number % 1 == 0){
+      for (var i = 2; i < number; i++) {
+      if (number % i === 0) {
+        console.log(false);
+        return false;
+      }
+
+    }
+
+    if (number === 1 || number === -1 || number === 0) {
+      console.log(false);
+      return false;
+    } else {
+      console.log(true);
+      return true;
+    }
+  }else{
+    console.log(false);
+    return false;
+  }
+
 }
 
 module.exports = trialDivision;
\ No newline at end of file