Q: What are the prime factors of the number 199,764?

 A: 2, 3, 31, 179

Why are those the prime factors of the number 199,764?

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 199,764

199,764
Factor Arrows
299,882
Factor Arrows
249,941
Factor Arrows
316,647
Factor Arrows
35,549
Factor Arrows
31179

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, 31, 179

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 31 x 179 = 199,764

This can also be written as 22 x 32 x 311 x 1791 = 199,764

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


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