Q: What are the prime factors of the number 358,163,072?

 A: 2, 17, 19, 8663

Why are those the prime factors of the number 358,163,072?

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 358,163,072

358,163,072
Factor Arrows
2179,081,536
Factor Arrows
289,540,768
Factor Arrows
244,770,384
Factor Arrows
222,385,192
Factor Arrows
211,192,596
Factor Arrows
25,596,298
Factor Arrows
22,798,149
Factor Arrows
17164,597
Factor Arrows
198,663

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, 17, 19, 8663

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 2 x 17 x 19 x 8,663 = 358,163,072

This can also be written as 27 x 171 x 191 x 8,6631 = 358,163,072

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


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