Q: What are the prime factors of the number 27,813,888?

 A: 2, 3, 503

Why are those the prime factors of the number 27,813,888?

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 27,813,888

27,813,888
Factor Arrows
213,906,944
Factor Arrows
26,953,472
Factor Arrows
23,476,736
Factor Arrows
21,738,368
Factor Arrows
2869,184
Factor Arrows
2434,592
Factor Arrows
2217,296
Factor Arrows
2108,648
Factor Arrows
254,324
Factor Arrows
227,162
Factor Arrows
213,581
Factor Arrows
34,527
Factor Arrows
31,509
Factor Arrows
3503

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, 503

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3 x 503 = 27,813,888

This can also be written as 211 x 33 x 5031 = 27,813,888

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


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