Q: What are the prime factors of the number 33,723,378?

 A: 2, 3, 13, 67, 239

Why are those the prime factors of the number 33,723,378?

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 33,723,378

33,723,378
Factor Arrows
216,861,689
Factor Arrows
35,620,563
Factor Arrows
31,873,521
Factor Arrows
3624,507
Factor Arrows
3208,169
Factor Arrows
1316,013
Factor Arrows
67239

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, 13, 67, 239

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 13 x 67 x 239 = 33,723,378

This can also be written as 21 x 34 x 131 x 671 x 2391 = 33,723,378

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


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