Q: What are the prime factors of the number 305,184?

 A: 2, 3, 11, 17

Why are those the prime factors of the number 305,184?

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 305,184

305,184
Factor Arrows
2152,592
Factor Arrows
276,296
Factor Arrows
238,148
Factor Arrows
219,074
Factor Arrows
29,537
Factor Arrows
33,179
Factor Arrows
11289
Factor Arrows
1717

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, 17

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 11 x 17 x 17 = 305,184

This can also be written as 25 x 31 x 111 x 172 = 305,184

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


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