## LCM of two numbers in Python using functions

**How to Find Least Common Multiple (LCM) in Python programming language by using the functions?**

**What is LCM?**

- LCM stands for Least Common Multiple/ Lowest Common Multiple.
- LCM is a theory of arithmetic and number system.

## How to demote LCM of two numbers?

The LCM of two numbers X and Y can be denoted by LCM (X,Y).

In this example, LCM is the lowest positive number that is divisible by both “X” and “Y”.

## Example of LCM

We have two integers 1 and 2. Let’s find LCM

**Multiples of 1**: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, ………and many similar.

**Multiples of 2**: 2, 4, 6, 8, 10, 12, 14, 16,………and many similar.

**Common multiples of 1 and 2 are will be the numbers that are common in both of these.**

2, 4, 6,8, 10, ………and many similar.

LCM is the lowest common multiplier so, in this example, we have 2 as an LCM.

## Write a Python program to find LCM of two numbers

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 |
# Write a Python function to calculate LCM def LCM_T4Tutorials(x, y): # Checking for Big number if x > y: Greater_Number = x else: Greater_Number = y while(True): if((Greater_Number % x == 0) and (Greater_Number %
y == 0)): lcm = Greater_Number break Greater_Number += 1 return lcm # Getting input from the users num1 = int(input("Please! Enter the first number: ")) num2 = int(input("Please! Enter the second number: ")) # Displaying the result for the users print("The L.C.M. of", num1,"and", num2,"is",
LCM_T4Tutorials(num1, num2)) |

**Output**

Please! Enter the first number: 4

Please! Enter the second number: 5

The L.C.M. of 4 and 5 is 20