Q: What are the prime factors of the number 233,432,640?

 A: 2, 3, 5, 7, 11579

Why are those the prime factors of the number 233,432,640?

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 233,432,640

233,432,640
Factor Arrows
2116,716,320
Factor Arrows
258,358,160
Factor Arrows
229,179,080
Factor Arrows
214,589,540
Factor Arrows
27,294,770
Factor Arrows
23,647,385
Factor Arrows
31,215,795
Factor Arrows
3405,265
Factor Arrows
581,053
Factor Arrows
711,579

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, 11579

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 3 x 5 x 7 x 11,579 = 233,432,640

This can also be written as 26 x 32 x 51 x 71 x 11,5791 = 233,432,640

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


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