Q: What are the prime factors of the number 209,716?

 A: 2, 13, 37, 109

Why are those the prime factors of the number 209,716?

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 209,716

209,716
Factor Arrows
2104,858
Factor Arrows
252,429
Factor Arrows
134,033
Factor Arrows
37109

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, 13, 37, 109

We can check our work by multiplying all of the prime factors together: 2 x 2 x 13 x 37 x 109 = 209,716

This can also be written as 22 x 131 x 371 x 1091 = 209,716

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


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