Q: What are the prime factors of the number 91,264?

 A: 2, 23, 31

Why are those the prime factors of the number 91,264?

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 91,264

91,264
Factor Arrows
245,632
Factor Arrows
222,816
Factor Arrows
211,408
Factor Arrows
25,704
Factor Arrows
22,852
Factor Arrows
21,426
Factor Arrows
2713
Factor Arrows
2331

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, 23, 31

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 23 x 31 = 91,264

This can also be written as 27 x 231 x 311 = 91,264

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


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