Power of 2 Checker

Check whether a positive integer is a power of 2 using a loop.

BeginnerTopic: Loop Programs
Back

Python Power of 2 Checker Program

This program helps you to learn the fundamental structure and syntax of Python programming.

Try This Code
# Program to check if a number is a power of 2

n = int(input("Enter a positive integer: "))

if n <= 0:
    print("Please enter a positive integer.")
else:
    while n % 2 == 0:
        n //= 2
    if n == 1:
        print("It is a power of 2")
    else:
        print("It is not a power of 2")
Output
Enter a positive integer: 16
It is a power of 2

Understanding Power of 2 Checker

We divide by 2 until the number is no longer even; if we eventually get 1, the original number was a power of 2.

Note: To write and run Python programs, you need to set up the local environment on your computer. Refer to the complete article Setting up Python Development Environment. If you do not want to set up the local environment on your computer, you can also use online IDE to write and run your Python programs.

Next
Print Number Pattern
Previous
Check Composite Number
Next
Print Number Pattern

Table of Contents