Q: What are the prime factors of the number 33,408?

 A: 2, 3, 29

Why are those the prime factors of the number 33,408?

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 33,408

33,408
Factor Arrows
216,704
Factor Arrows
28,352
Factor Arrows
24,176
Factor Arrows
22,088
Factor Arrows
21,044
Factor Arrows
2522
Factor Arrows
2261
Factor Arrows
387
Factor Arrows
329

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, 29

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 3 x 29 = 33,408

This can also be written as 27 x 32 x 291 = 33,408

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


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