Q: What are the prime factors of the number 91,968?

 A: 2, 3, 479

Why are those the prime factors of the number 91,968?

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 91,968

91,968
Factor Arrows
245,984
Factor Arrows
222,992
Factor Arrows
211,496
Factor Arrows
25,748
Factor Arrows
22,874
Factor Arrows
21,437
Factor Arrows
3479

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, 479

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 3 x 479 = 91,968

This can also be written as 26 x 31 x 4791 = 91,968

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


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