Write a Python program to check if a given positive integer is a power of three

 

Title : Write a Python program to check if a given positive integer is a power of three

Description :

Write a Python program to check if a given positive integer is a power of three

Source:

def is_Power_of_three(n):

    while (n % 3 == 0):

         n /= 3;         

    return n == 1;

print(is_Power_of_three(9))

print(is_Power_of_three(81))

print(is_Power_of_three(21)) 

Sample Output:

True                                                                                                          
True                                                                                                          
False