Q: What are the prime factors of the number 108,702?

 A: 2, 3, 11, 61

Why are those the prime factors of the number 108,702?

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 108,702

108,702
Factor Arrows
254,351
Factor Arrows
318,117
Factor Arrows
36,039
Factor Arrows
32,013
Factor Arrows
3671
Factor Arrows
1161

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, 11, 61

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 11 x 61 = 108,702

This can also be written as 21 x 34 x 111 x 611 = 108,702

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


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