Q: What are the prime factors of the number 217,184?

 A: 2, 11, 617

Why are those the prime factors of the number 217,184?

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 217,184

217,184
Factor Arrows
2108,592
Factor Arrows
254,296
Factor Arrows
227,148
Factor Arrows
213,574
Factor Arrows
26,787
Factor Arrows
11617

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, 11, 617

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 11 x 617 = 217,184

This can also be written as 25 x 111 x 6171 = 217,184

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


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