Q: What are the prime factors of the number 2,706,816?

 A: 2, 3, 7, 19, 53

Why are those the prime factors of the number 2,706,816?

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 2,706,816

2,706,816
Factor Arrows
21,353,408
Factor Arrows
2676,704
Factor Arrows
2338,352
Factor Arrows
2169,176
Factor Arrows
284,588
Factor Arrows
242,294
Factor Arrows
221,147
Factor Arrows
37,049
Factor Arrows
71,007
Factor Arrows
1953

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, 19, 53

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 3 x 7 x 19 x 53 = 2,706,816

This can also be written as 27 x 31 x 71 x 191 x 531 = 2,706,816

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


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