# What is LCM of 21 and 97?

## Answer: LCM of 21 and 97 is 2037

## Explanation:

Least Common Multiple (LCM ) is the smallest number in which the given numbers divide exactly.

We can find the LCM of the numbers in many ways the commonly used methods are listed below.

### LCM of 21 and 97 by Formula

The formula of LCM is LCM (a,b) = (a × b) / GCF (a, b)

The greatest common factor of (21,97) = 1

Therefore

LCM of 21 and 97 = (21 × 97) / 1

= 2037/1 = 2037

LCM of 21 and 97 = 2037

### LCM of 21 and 97 by Common Division Method

In this division method, we divide the numbers simultaneously with prime numbers and stop it when we don't have a prime number to divide the given numbers.

Irrespective of the method, the solution to our question LCM of 21 and 97 is the same.