Q: What are the prime factors of the number 363,216?

 A: 2, 3, 7, 23, 47

Why are those the prime factors of the number 363,216?

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 363,216

363,216
Factor Arrows
2181,608
Factor Arrows
290,804
Factor Arrows
245,402
Factor Arrows
222,701
Factor Arrows
37,567
Factor Arrows
71,081
Factor Arrows
2347

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, 23, 47

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 7 x 23 x 47 = 363,216

This can also be written as 24 x 31 x 71 x 231 x 471 = 363,216

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


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