Q: What are the prime factors of the number 33,215,154?

 A: 2, 3, 7, 19, 107, 389

Why are those the prime factors of the number 33,215,154?

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 33,215,154

33,215,154
Factor Arrows
216,607,577
Factor Arrows
35,535,859
Factor Arrows
7790,837
Factor Arrows
1941,623
Factor Arrows
107389

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, 19, 107, 389

We can check our work by multiplying all of the prime factors together: 2 x 3 x 7 x 19 x 107 x 389 = 33,215,154

This can also be written as 21 x 31 x 71 x 191 x 1071 x 3891 = 33,215,154

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


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