Q: What are the prime factors of the number 748?

 A: 2, 11, 17

Why are those the prime factors of the number 748?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 748

748
Factor Arrows
2374
Factor Arrows
2187
Factor Arrows
1117

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 11, 17

We can check our work by multiplying all of the prime factors together: 2 x 2 x 11 x 17 = 748

This can also be written as 22 x 111 x 171 = 748

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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