Find the number of unique Prime factors of 600.

Explanation

To find the number of unique prime factors of 600, we will first perform the prime factorization of the number.

### Step 1: Prime Factorization of 600
We start by dividing 600 by the smallest prime number, which is 2.

- 600 ÷ 2 = 300
- 300 ÷ 2 = 150
- 150 ÷ 2 = 75 (Now we cannot divide by 2 anymore since 75 is not even)
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