- Trending Categories
- Data Structure
- Networking
- RDBMS
- Operating System
- Java
- iOS
- HTML
- CSS
- Android
- Python
- C Programming
- C++
- C#
- MongoDB
- MySQL
- Javascript
- PHP

- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who

# Check if a number can be expressed as a^b in Python

Suppose we have a number n. We have to check whether we can make express it like a^b or not.

So, if the input is like 125, then the output will be True as 125 = 5^3, so a = 5 and b = 3

To solve this, we will follow these steps −

- if num is same as 1, then:
- return true

- for initialize i := 2, when i * i <= num, update (increase i by 1), do:
- val := log(num) / log(i)
- if val - integer part of val is nearly 0, then:
- return true

- return false

Let us see the following implementation to get better understanding −

## Example

#include<iostream> #include<cmath> using namespace std; bool solve(int num) { if (num == 1) return true; for (int i = 2; i * i <= num; i++) { double val = log(num) / log(i); if ((val - (int)val) < 0.00000001) return true; } return false; } int main() { int n = 125; cout << solve(n); }

## Input

125

## Output

1

- Related Questions & Answers
- Check if a number can be expressed as a^b in C++
- Check if a number can be expressed as power in C++
- Check if a number can be expressed as a sum of consecutive numbers in C++
- Check if a number can be expressed as sum two abundant numbers in C++
- Check if a number can be expressed as 2^x + 2^y in C++
- Check if a prime number can be expressed as sum of two Prime Numbers in Python
- Check if an integer can be expressed as a sum of two semi-primes in Python
- Check if a number can be expressed as x^y (x raised to power y) in C++
- C++ Program to Check Whether a Number can be Expressed as Sum of Two Prime Numbers
- Java Program to Check Whether a Number can be Expressed as Sum of Two Prime Numbers
- Check if N can be represented as sum of integers chosen from set {A, B} in Python
- Check if a number can be represented as a sum of 2 triangular numbers in C++
- Check if a number can be written as sum of three consecutive integers in C++
- How I can check if A is superclass of B in Python?
- C program for a number to be expressed as a sum of two prime numbers.

Advertisements