Q: What are the prime factors of the number 873,908?

 A: 2, 7, 23, 59

Why are those the prime factors of the number 873,908?

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 873,908

873,908
Factor Arrows
2436,954
Factor Arrows
2218,477
Factor Arrows
731,211
Factor Arrows
231,357
Factor Arrows
2359

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, 7, 23, 59

We can check our work by multiplying all of the prime factors together: 2 x 2 x 7 x 23 x 23 x 59 = 873,908

This can also be written as 22 x 71 x 232 x 591 = 873,908

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


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