Q: What are the prime factors of the number 704?

 A: 2, 11

Why are those the prime factors of the number 704?

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 704

704
Factor Arrows
2352
Factor Arrows
2176
Factor Arrows
288
Factor Arrows
244
Factor Arrows
222
Factor Arrows
211

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

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 11 = 704

This can also be written as 26 x 111 = 704

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


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