Q: What are the prime factors of the number 132,678?

 A: 2, 3, 7, 13

Why are those the prime factors of the number 132,678?

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 132,678

132,678
Factor Arrows
266,339
Factor Arrows
322,113
Factor Arrows
37,371
Factor Arrows
32,457
Factor Arrows
3819
Factor Arrows
3273
Factor Arrows
391
Factor Arrows
713

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, 13

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 3 x 3 x 7 x 13 = 132,678

This can also be written as 21 x 36 x 71 x 131 = 132,678

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


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