Q: What are the prime factors of the number 209,700?

 A: 2, 3, 5, 233

Why are those the prime factors of the number 209,700?

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 209,700

209,700
Factor Arrows
2104,850
Factor Arrows
252,425
Factor Arrows
317,475
Factor Arrows
35,825
Factor Arrows
51,165
Factor Arrows
5233

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, 5, 233

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 5 x 5 x 233 = 209,700

This can also be written as 22 x 32 x 52 x 2331 = 209,700

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


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