diff --git a/maths/prime_factors.py b/maths/prime_factors.py
index e7a523be0..fdbea6ae4 100644
--- a/maths/prime_factors.py
+++ b/maths/prime_factors.py
@@ -2,6 +2,7 @@ from __future__ import annotations
 from math import ceil, sqrt
 import time
 
+
 def timer(func):
     def wrapper(*args, **kwargs):
         start = time.time()
@@ -10,8 +11,10 @@ def timer(func):
         end = time.time()
         print(f"{func.__name__} took {end - start:.6f} seconds to execute.")
         return result
+
     return wrapper
 
+
 @timer
 def prime_factors(n: int) -> list[int]:
     """
@@ -109,9 +112,8 @@ def primeproduct(num: int) -> list[int]:
     return prime_factors
 
 
-
 if __name__ == "__main__":
-    n = int(input('enter number: '))
+    n = int(input("enter number: "))
     primeproduct(n)
     prime_factors(n)
     import doctest