Q: What are the prime factors of the number 687,552?

 A: 2, 3, 3581

Why are those the prime factors of the number 687,552?

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 687,552

687,552
Factor Arrows
2343,776
Factor Arrows
2171,888
Factor Arrows
285,944
Factor Arrows
242,972
Factor Arrows
221,486
Factor Arrows
210,743
Factor Arrows
33,581

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, 3, 3581

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 3 x 3,581 = 687,552

This can also be written as 26 x 31 x 3,5811 = 687,552

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


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