Define a function is_prime that receives an integer argument and returns true if the argument is a prime number and otherwise returns false. (An integer is prime if it is greater than 1 and cannot be divided evenly [with no remainder] other than by itself and one. For example, 15 is not prime because it can be divided by 3 or 5 with no remainder. 13 is prime because only 1 and 13 divide it with no remainder.) This function may be written with a for loop, a while loop or using recursion. Use the up or down arrow keys to change the height.

This function (along with the main) is written using python progrmming language.

The function is written using for loop;

This program does not make use comments (See explanation section for detailed line by line explanation)

def is_prime (num):

if num = = 1:

print (str (num) + " is not prime")

else:

for i in range (2, num):

if num % i = = 0:

print (str (num) + " is not prime because it can b divided by "+str (i) + " and "+str (int (num/i)) + " with no remainder")

break;

else:

print (str (num) + " is prime because only 1 and "+str (num) + " divide it with no remainder")

num = int (input ("Number: "))

is_prime (num)

Explanation:

This line defines the function is_prime

def is_prime (num):

The italicize line checks if the user input is 1; If yes it prints 1 is not prime

if num = = 1:

print (str (num) + " is not prime")

If the above conditional statement is not true (i. e. if user input is greater than 1), the following is executed

else:

The italicized checks if user input is primer (by using for loop iteration which starts from 2 and ends at the input number)

for i in range (2, num):

if num % i = = 0:

This line prints if the number is not a prime number and why it's not a prime number

print (str (num) + " is not prime because it can b divided by "+str (i) + " and "+str (int (num/i)) + " with no remainder")

break;

If otherwise; i. e if user input is prime, the following italicized statements are executed

else:

print (str (num) + " is prime because only 1 and "+str (num) + " divide it with no remainder")

The function ends here

The main begins here

num = int (input ("Number: ")) This line prompts user for input

is_prime (num) This line calls the defined function