Index: database/factories/FolderFactory.php
===================================================================
--- database/factories/FolderFactory.php	(revision f40603e4e8670a6413df1864c3f59828999a6a3e)
+++ database/factories/FolderFactory.php	(revision e0d3f947938d1be27857c793dacd8fd8c8a42405)
@@ -8,4 +8,5 @@
 use Faker\Provider\DateTime;
 use Illuminate\Database\Eloquent\Factories\Factory;
+use Illuminate\Support\Arr;
 use Illuminate\Support\Facades\Storage;
 
@@ -26,6 +27,7 @@
     public function definition()
     {
+        $array = [5, 15, 25, 35, 45, 55, 65, 75, 85, 95, 105, 115, 125, 135, 145];
 
-        $deptId = 5;
+        $deptId = Arr::random($array);
 
         $deptCode = Department::find($deptId)->code;