Q: What are the prime factors of the number 717,899?

 A: 7, 13, 23

Why are those the prime factors of the number 717,899?

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 717,899

717,899
Factor Arrows
7102,557
Factor Arrows
714,651
Factor Arrows
72,093
Factor Arrows
7299
Factor Arrows
1323

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:

7, 13, 23

We can check our work by multiplying all of the prime factors together: 7 x 7 x 7 x 7 x 13 x 23 = 717,899

This can also be written as 74 x 131 x 231 = 717,899

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


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