Q: What are the prime factors of the number 38,624?

 A: 2, 17, 71

Why are those the prime factors of the number 38,624?

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 38,624

38,624
Factor Arrows
219,312
Factor Arrows
29,656
Factor Arrows
24,828
Factor Arrows
22,414
Factor Arrows
21,207
Factor Arrows
1771

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, 71

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 17 x 71 = 38,624

This can also be written as 25 x 171 x 711 = 38,624

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


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