Q: What are the prime factors of the number 716,625?

 A: 3, 5, 7, 13

Why are those the prime factors of the number 716,625?

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 716,625

716,625
Factor Arrows
3238,875
Factor Arrows
379,625
Factor Arrows
515,925
Factor Arrows
53,185
Factor Arrows
5637
Factor Arrows
791
Factor Arrows
713

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:

3, 5, 7, 13

We can check our work by multiplying all of the prime factors together: 3 x 3 x 5 x 5 x 5 x 7 x 7 x 13 = 716,625

This can also be written as 32 x 53 x 72 x 131 = 716,625

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


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