Q: What are the prime factors of the number 85,464?

 A: 2, 3, 1187

Why are those the prime factors of the number 85,464?

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 85,464

85,464
Factor Arrows
242,732
Factor Arrows
221,366
Factor Arrows
210,683
Factor Arrows
33,561
Factor Arrows
31,187

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, 1187

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 1,187 = 85,464

This can also be written as 23 x 32 x 1,1871 = 85,464

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


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