Q: What are the prime factors of the number 231,323,400?

 A: 2, 3, 5, 7, 11, 1669

Why are those the prime factors of the number 231,323,400?

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 231,323,400

231,323,400
Factor Arrows
2115,661,700
Factor Arrows
257,830,850
Factor Arrows
228,915,425
Factor Arrows
39,638,475
Factor Arrows
33,212,825
Factor Arrows
5642,565
Factor Arrows
5128,513
Factor Arrows
718,359
Factor Arrows
111,669

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, 5, 7, 11, 1669

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 5 x 5 x 7 x 11 x 1,669 = 231,323,400

This can also be written as 23 x 32 x 52 x 71 x 111 x 1,6691 = 231,323,400

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


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