Q: What are the prime factors of the number 171,160?

 A: 2, 5, 11, 389

Why are those the prime factors of the number 171,160?

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 171,160

171,160
Factor Arrows
285,580
Factor Arrows
242,790
Factor Arrows
221,395
Factor Arrows
54,279
Factor Arrows
11389

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, 5, 11, 389

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 11 x 389 = 171,160

This can also be written as 23 x 51 x 111 x 3891 = 171,160

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


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