Q: What are the prime factors of the number 231,435,008?

 A: 2, 7, 17, 71, 107

Why are those the prime factors of the number 231,435,008?

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 231,435,008

231,435,008
Factor Arrows
2115,717,504
Factor Arrows
257,858,752
Factor Arrows
228,929,376
Factor Arrows
214,464,688
Factor Arrows
27,232,344
Factor Arrows
23,616,172
Factor Arrows
21,808,086
Factor Arrows
2904,043
Factor Arrows
7129,149
Factor Arrows
177,597
Factor Arrows
71107

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, 17, 71, 107

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 2 x 7 x 17 x 71 x 107 = 231,435,008

This can also be written as 28 x 71 x 171 x 711 x 1071 = 231,435,008

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


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