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 **23**and **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**

**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.

**Answer: 483
**

**LCM calculator
**

Enter two numbers to check their LCM

**
LCM of two Numbers
**