diff --git a/factorial b/factorial
new file mode 100644
index 0000000..73e4b93
--- /dev/null
+++ b/factorial
@@ -0,0 +1,11 @@
+def factorial(n):
+    if n == 0 or n == 1:
+        return 1
+    else:
+        return n * factorial(n - 1)
+
+# Example usage:
+number = 5
+result = factorial(number)
+
+print(f"The factorial of {number} is {result}.")