Q: What are the prime factors of the number 270,816?

 A: 2, 3, 7, 13, 31

Why are those the prime factors of the number 270,816?

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 270,816

270,816
Factor Arrows
2135,408
Factor Arrows
267,704
Factor Arrows
233,852
Factor Arrows
216,926
Factor Arrows
28,463
Factor Arrows
32,821
Factor Arrows
7403
Factor Arrows
1331

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, 13, 31

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 7 x 13 x 31 = 270,816

This can also be written as 25 x 31 x 71 x 131 x 311 = 270,816

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


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