Q: What are the prime factors of the number 15,111,252?

 A: 2, 3, 13, 47, 229

Why are those the prime factors of the number 15,111,252?

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 15,111,252

15,111,252
Factor Arrows
27,555,626
Factor Arrows
23,777,813
Factor Arrows
31,259,271
Factor Arrows
3419,757
Factor Arrows
3139,919
Factor Arrows
1310,763
Factor Arrows
47229

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, 13, 47, 229

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 13 x 47 x 229 = 15,111,252

This can also be written as 22 x 33 x 131 x 471 x 2291 = 15,111,252

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


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