LCM of 23 and 21 is 483
What is LCM?
LCM stands for the least common multiple. The LCM of two numbers, such as 23 and 21, is the smallest number that is divisible by both 23and 21 without producing a remainder.
How to calculate the Lcm of 23 and 21
You can calculate the LCM of 23 and 21 by using any of the two methods listed below.
Method 1: By Prime Factorization
Step 1: Find the prime factors of 23
Step 2: Find the prime factors of 21
3 X 7
Step 3: List the Prime factors of 23 and 21 the greatest number of times they occur.
3 X 7 X 23
Step 4: Multiply the answer above to get the lcm of 23 and 21 which is: 483
Method 2: LCM by Long division
We can also find the LCM of numbers using the long division method. Look at the image below to find out how to find LCM using Long division.
Enter two numbers to check their LCM