diff --git a/rsa.py b/rsa.py
index 3f07577..e1c0692 100644
--- a/rsa.py
+++ b/rsa.py
@@ -289,7 +289,7 @@ def prime_factors(number, base):
         if j != 0:
             factors.update({i: j})
     if num > 2:
-        factors.update({number: 1})
+        factors.update({int(num): 1})
 
     print(factors)
 def readKeyFile(keyName):