Q: What are the prime factors of the number 33,216?

 A: 2, 3, 173

Why are those the prime factors of the number 33,216?

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 33,216

33,216
Factor Arrows
216,608
Factor Arrows
28,304
Factor Arrows
24,152
Factor Arrows
22,076
Factor Arrows
21,038
Factor Arrows
2519
Factor Arrows
3173

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, 173

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 3 x 173 = 33,216

This can also be written as 26 x 31 x 1731 = 33,216

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


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