Q: What are the prime factors of the number 166,870,704?

 A: 2, 3, 7, 11, 13, 23, 151

Why are those the prime factors of the number 166,870,704?

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 166,870,704

166,870,704
Factor Arrows
283,435,352
Factor Arrows
241,717,676
Factor Arrows
220,858,838
Factor Arrows
210,429,419
Factor Arrows
33,476,473
Factor Arrows
7496,639
Factor Arrows
1145,149
Factor Arrows
133,473
Factor Arrows
23151

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, 7, 11, 13, 23, 151

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 7 x 11 x 13 x 23 x 151 = 166,870,704

This can also be written as 24 x 31 x 71 x 111 x 131 x 231 x 1511 = 166,870,704

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


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