Q: What are the prime factors of the number 39,490,568?

 A: 2, 13, 29209

Why are those the prime factors of the number 39,490,568?

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 39,490,568

39,490,568
Factor Arrows
219,745,284
Factor Arrows
29,872,642
Factor Arrows
24,936,321
Factor Arrows
13379,717
Factor Arrows
1329,209

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, 13, 29209

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 13 x 13 x 29,209 = 39,490,568

This can also be written as 23 x 132 x 29,2091 = 39,490,568

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


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