Q: What are the prime factors of the number 15,568,224?

 A: 2, 3, 7, 23167

Why are those the prime factors of the number 15,568,224?

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 15,568,224

15,568,224
Factor Arrows
27,784,112
Factor Arrows
23,892,056
Factor Arrows
21,946,028
Factor Arrows
2973,014
Factor Arrows
2486,507
Factor Arrows
3162,169
Factor Arrows
723,167

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, 23167

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 7 x 23,167 = 15,568,224

This can also be written as 25 x 31 x 71 x 23,1671 = 15,568,224

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


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