Reference Materials
Created with over a decade of experience.
Certification Courses
Created with over a decade of experience and thousands of feedback.
Python Program to Find Factorial of Number Using Recursion
To understand this example, you should have the knowledge of the following Python programming topics:
The factorial of a number is the product of all the integers from 1 to that number.
For example, the factorial of 6 is 1*2*3*4*5*6 = 720. Factorial is not defined for negative numbers and the factorial of zero is one, 0! = 1.
Source Code
# Factorial of a number using recursion
def recur_factorial(n):
if n == 1:
return n
else:
return n*recur_factorial(n-1)
num = 7
# check if the number is negative
if num < 0:
print("Sorry, factorial does not exist for negative numbers")
elif num == 0:
print("The factorial of 0 is 1")
else:
print("The factorial of", num, "is", recur_factorial(num))
Output
The factorial of 7 is 5040
Note: To find the factorial of another number, change the value of num.
Here, the number is stored in num. The number is passed to the recur_factorial() function to compute the factorial of the number.
Also Read: