Q: What are the prime factors of the number 13,877,784?

 A: 2, 3, 47, 1367

Why are those the prime factors of the number 13,877,784?

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 13,877,784

13,877,784
Factor Arrows
26,938,892
Factor Arrows
23,469,446
Factor Arrows
21,734,723
Factor Arrows
3578,241
Factor Arrows
3192,747
Factor Arrows
364,249
Factor Arrows
471,367

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, 47, 1367

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 47 x 1,367 = 13,877,784

This can also be written as 23 x 33 x 471 x 1,3671 = 13,877,784

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


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