Q: What are the prime factors of the number 38,679,168?

 A: 2, 3, 11, 9157

Why are those the prime factors of the number 38,679,168?

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 38,679,168

38,679,168
Factor Arrows
219,339,584
Factor Arrows
29,669,792
Factor Arrows
24,834,896
Factor Arrows
22,417,448
Factor Arrows
21,208,724
Factor Arrows
2604,362
Factor Arrows
2302,181
Factor Arrows
3100,727
Factor Arrows
119,157

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, 11, 9157

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 3 x 11 x 9,157 = 38,679,168

This can also be written as 27 x 31 x 111 x 9,1571 = 38,679,168

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


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