Q: What are the prime factors of the number 32,581,570?

 A: 2, 5, 7, 23, 59

Why are those the prime factors of the number 32,581,570?

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 32,581,570

32,581,570
Factor Arrows
216,290,785
Factor Arrows
53,258,157
Factor Arrows
7465,451
Factor Arrows
766,493
Factor Arrows
79,499
Factor Arrows
71,357
Factor Arrows
2359

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, 5, 7, 23, 59

We can check our work by multiplying all of the prime factors together: 2 x 5 x 7 x 7 x 7 x 7 x 23 x 59 = 32,581,570

This can also be written as 21 x 51 x 74 x 231 x 591 = 32,581,570

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


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