Q: What are the prime factors of the number 108,738?

 A: 2, 3, 7, 863

Why are those the prime factors of the number 108,738?

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 108,738

108,738
Factor Arrows
254,369
Factor Arrows
318,123
Factor Arrows
36,041
Factor Arrows
7863

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, 7, 863

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 7 x 863 = 108,738

This can also be written as 21 x 32 x 71 x 8631 = 108,738

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


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