# What is the LCM of 17 and 5?

The least possible number which is exactly divisible by both 17 and 5 is the LCM of 17 and 5

## Answer: LCM of 17 and 5 is 85

We will learn two methods to find LCM of 17 and 5.

## Explanation:

The least common multiple is the smallest or least possible number which is exactly divisible by the given numbers.

### Method 1: LCM of 20 and 30 by Method of Prime Factorisation

Steps to find LCM by using prime factorization are given below.

**Step 1: **Write the prime factorized form which must be in exponential notation.

**Step 2:** Take the product of factors with their highest power.

17 in Prime Factorised form: 17

5 in Prime Factorised form: 5

Therefore, LCM of 17 and 5: 17 × 5 = 85

### Method 2: LCM of 20 and 30 by List of Multiples Method

- Write the multiples of 17 and 5.
- Spot the ones which are common to the multiples of 17 and 5.
- Take the one which is the smallest among the common ones as the LCM of 17 and 5.