To determine the unique prime factors of a number, we need to perform prime factorization. Prime factorization involves breaking down a number into its smallest prime factors that multiply together to form the original number.

Let's start with the number 1,050:

1. Divide 1,050 by the smallest prime number, which is 2:
   1,050 ÷ 2 = 525

2. Now divide 525 by the next smallest prime number, which is 3:
   525 ÷ 3 = 175

3. Divide 175 by the next smallest prime number, which is 5:
   175 ÷ 5 = 35

4. Divide 35 by the next smallest prime number, which is 5 again:
   35 ÷ 5 = 7

Now we have reached a prime number (7), so our prime factorization is complete.

The unique prime factors of 1,050 are 2, 3, 5, and 7.
How many unique prime factors does the number 1,050 have?