Q: What are the prime factors of the number 216,322,568?

 A: 2, 7, 11, 83, 4231

Why are those the prime factors of the number 216,322,568?

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 216,322,568

216,322,568
Factor Arrows
2108,161,284
Factor Arrows
254,080,642
Factor Arrows
227,040,321
Factor Arrows
73,862,903
Factor Arrows
11351,173
Factor Arrows
834,231

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, 7, 11, 83, 4231

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 7 x 11 x 83 x 4,231 = 216,322,568

This can also be written as 23 x 71 x 111 x 831 x 4,2311 = 216,322,568

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


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