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Find whether a given integer is a power of 3 or not
• Difficulty Level : Easy
• Last Updated : 09 Apr, 2021

Given a positive integer, write a function to find if it is a power of three or not.
Examples:

```Input : 3
Output :Yes

Input :6
Output :No```

Approach:
The logic is very simple. Any integer number other than power of 3 which divides highest power of 3 value that integer can hold 3^19 = 1162261467 (Assuming that integers are stored using 32 bits) will give reminder non-zero.

## C++

 `// C++ program to check if a number is power``// of 3 or not.``#include ` `// Returns true if n is power of 3, else false``bool` `check(``int` `n)``{``    ``if` `(n <= 0)``        ``return` `false``;``    ``/* The maximum power of 3 value that``       ``integer can hold is 1162261467 ( 3^19 ) .*/``    ``return` `1162261467 % n == 0;``}` `// Driver code``int` `main()``{``    ``int` `n = 9;``    ``if` `(check(n))``        ``printf``(``"Yes"``);``    ``else``        ``printf``(``"No"``);` `    ``return` `0;``}`

## Java

 `// Java program to check if a number is power``// of 3 or not.``public` `class` `Power_3 {` `    ``// Returns true if n is power of 3, else false``    ``static` `boolean` `check(``int` `n)``    ``{``        ``/* To prevent``        ``java.lang.ArithmeticException: / by zero and``        ``negative n */``        ``if` `(n <= ``0``)``            ``return` `false``;``        ``/* The maximum power of 3 value that``           ``integer can hold is 1162261467 ( 3^19 ) .*/``        ``return` `1162261467` `% n == ``0``;``    ``}` `    ``// Driver code``    ``public` `static` `void` `main(String args[])``    ``{``        ``int` `n = ``9``;``        ``if` `(check(n))``            ``System.out.println(``"Yes"``);``        ``else``            ``System.out.println(``"No"``);``    ``}``}``// This code is contributed by Sumit Ghosh`

## Python

 `# Python program to check if a number is power``# of 3 or not.`` ` `# Returns true if n is power of 3, else false``def` `check(n):``    ``""" The maximum power of 3 value that``       ``integer can hold is 1162261467 ( 3^19 ) ."""``    ``return` `1162261467` `%` `n ``=``=` `0`` ` `# Driver code``n ``=` `9``if` `(check(n)):``    ``print` `(``"Yes"``)``else``:``    ``print` `(``"No"``)` `# This code is contributed by Sachin Bisht`

## C#

 `// C# program to check if a number``// is power of 3 or not.``using` `System;` `public` `class` `GFG {` `    ``// Returns true if n is power``    ``// of 3, else false``    ``static` `bool` `check(``int` `n)``    ``{``        ``if` `(n <= 0)``            ``return` `false``;``        ``/* The maximum power of 3``        ``value that integer can hold``        ``is 1162261467 ( 3^19 ) .*/``        ``return` `1162261467 % n == 0;``    ``}` `    ``// Driver code``    ``public` `static` `void` `Main()``    ``{``        ``int` `n = 9;``        ``if` `(check(n))``            ``Console.Write(``"Yes"``);``        ``else``            ``Console.Write(``"No"``);``    ``}``}` `// This code is contributed by``// nitin mittal.`

## PHP

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## Javascript

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Output:

`Yes`

Time Complexity : O(1)

Auxiliary Space: O(1)
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