diff --git a/README.md b/README.md
index 4e3deb4..846deae 100644
--- a/README.md
+++ b/README.md
@@ -34,3 +34,4 @@ array(2) {
 
 As you can see, the factorize function accepts integers and strings as parameter, so that if you're poor and you have only a 32 bit system, you will still be able to provide 64 bit integers as a string.
 
+The function can throw an \Exception if factorization fails.
diff --git a/example.php b/example.php
index 65165ff..a516835 100644
--- a/example.php
+++ b/example.php
@@ -1,3 +1,3 @@
 <?php
-var_dump(factorize(2189285106422392999));
-var_dump(factorize("2189285106422392999"));
+var_dump(factorize(1724114033281923457));
+//var_dump(factorize("2189285106422392999"));