Q: What are the prime factors of the number 209,088?

 A: 2, 3, 11

Why are those the prime factors of the number 209,088?

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 209,088

209,088
Factor Arrows
2104,544
Factor Arrows
252,272
Factor Arrows
226,136
Factor Arrows
213,068
Factor Arrows
26,534
Factor Arrows
23,267
Factor Arrows
31,089
Factor Arrows
3363
Factor Arrows
3121
Factor Arrows
1111

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, 11

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3 x 11 x 11 = 209,088

This can also be written as 26 x 33 x 112 = 209,088

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


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