Q: What are the prime factors of the number 33,272,720?

 A: 2, 5, 13, 23, 107

Why are those the prime factors of the number 33,272,720?

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 33,272,720

33,272,720
Factor Arrows
216,636,360
Factor Arrows
28,318,180
Factor Arrows
24,159,090
Factor Arrows
22,079,545
Factor Arrows
5415,909
Factor Arrows
1331,993
Factor Arrows
132,461
Factor Arrows
23107

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, 5, 13, 23, 107

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 13 x 13 x 23 x 107 = 33,272,720

This can also be written as 24 x 51 x 132 x 231 x 1071 = 33,272,720

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


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