Q: What are the prime factors of the number 91,360?

 A: 2, 5, 571

Why are those the prime factors of the number 91,360?

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 91,360

91,360
Factor Arrows
245,680
Factor Arrows
222,840
Factor Arrows
211,420
Factor Arrows
25,710
Factor Arrows
22,855
Factor Arrows
5571

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, 571

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 571 = 91,360

This can also be written as 25 x 51 x 5711 = 91,360

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


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