Python Program to find Composite Number

You are Here:

What is Composite Number?

A positive integer that has at least one divisor other than 1 and itself.

Tips: It is recommended to use our online Composite Numbers calculator for better understanding.

Examples

The following table provides few examples of composite numbers.

NumberDivisorResult
131, 13Not a Composite Number
151, 3, 5, 15Composite Number
471, 47Not a Composite Number

Using for loop

In the following example, we will check whether the number 12 is a Composite number or not using for loop.

Example

Python Compiler
num = 12; count = 0; for i in range(1, num+1): if(num % i == 0): count += 1; if(count > 2): print("%d is a composite number" % num) else: print("%d is not a composite number" % num)

Output

12 is a composite number

Using while loop

In the following example, we will check whether the number 12 is a Composite number or not using while loop.

Example

Python Compiler
num = 12; count = 0; i = 1; while(num >= i): if(num % i == 0): count += 1 i += 1 if(count > 2): print("%d is a composite number" % num) else: print("%d is not a composite number" % num)

Output

12 is a composite number

Composite Numbers between the Given Range

In the following example, we will find all the Composite numbers between 1 and 10.

Example

Python Compiler
start = 1; end = 10; count = 0; print("Composite Numbers between %d and %d: " % (start, end)); for start in range(start, end+1): for i in range(1, start+1): if(start % i == 0): count += 1; if(count > 2): print(start, end=" ") count = 0

Output

Composite Numbers between 1 and 10: 4 6 8 9 10

Check Whether the Given Number is Prime or Composite

In the following example, we will check whether the given number is a Prime number or Composite number.

Example

Python Compiler
num = int(input("Enter a (int) number: ")); count = 0; for i in range(1, num+1): if(num % i == 0): count += 1; if(count > 2): print("%d is a composite number" % num) else: print("%d is a prime number" % num)

Output

Enter a (int) number: 54 54 is a composite number

Reminder

Hi Developers, we almost covered 90% of String functions and Interview Question on Python with examples for quick and easy learning.

We are working to cover every Single Concept in Python.

Please do google search for:

Join Our Channel

Join our telegram channel to get an instant update on depreciation and new features on HTML, CSS, JavaScript, jQuery, Node.js, PHP and Python.

This channel is primarily useful for Full Stack Web Developer.

Share this Page

Meet the Author