Q: What are the prime factors of the number 170,392?

 A: 2, 19, 59

Why are those the prime factors of the number 170,392?

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 170,392

170,392
Factor Arrows
285,196
Factor Arrows
242,598
Factor Arrows
221,299
Factor Arrows
191,121
Factor Arrows
1959

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, 19, 59

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 19 x 19 x 59 = 170,392

This can also be written as 23 x 192 x 591 = 170,392

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


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