Q: What are the prime factors of the number 19,167,372?

 A: 2, 3, 7, 23, 3307

Why are those the prime factors of the number 19,167,372?

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 19,167,372

19,167,372
Factor Arrows
29,583,686
Factor Arrows
24,791,843
Factor Arrows
31,597,281
Factor Arrows
3532,427
Factor Arrows
776,061
Factor Arrows
233,307

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, 23, 3307

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 7 x 23 x 3,307 = 19,167,372

This can also be written as 22 x 32 x 71 x 231 x 3,3071 = 19,167,372

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


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