Q: What are the prime factors of the number 214,816?

 A: 2, 7, 137

Why are those the prime factors of the number 214,816?

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 214,816

214,816
Factor Arrows
2107,408
Factor Arrows
253,704
Factor Arrows
226,852
Factor Arrows
213,426
Factor Arrows
26,713
Factor Arrows
7959
Factor Arrows
7137

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, 7, 137

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 7 x 7 x 137 = 214,816

This can also be written as 25 x 72 x 1371 = 214,816

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


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