Q: What are the prime factors of the number 13,764,816?

 A: 2, 3, 13, 19, 43

Why are those the prime factors of the number 13,764,816?

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 13,764,816

13,764,816
Factor Arrows
26,882,408
Factor Arrows
23,441,204
Factor Arrows
21,720,602
Factor Arrows
2860,301
Factor Arrows
3286,767
Factor Arrows
395,589
Factor Arrows
331,863
Factor Arrows
310,621
Factor Arrows
13817
Factor Arrows
1943

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, 19, 43

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 3 x 13 x 19 x 43 = 13,764,816

This can also be written as 24 x 34 x 131 x 191 x 431 = 13,764,816

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


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