Q: What are the prime factors of the number 689,184?

 A: 2, 3, 2393

Why are those the prime factors of the number 689,184?

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 689,184

689,184
Factor Arrows
2344,592
Factor Arrows
2172,296
Factor Arrows
286,148
Factor Arrows
243,074
Factor Arrows
221,537
Factor Arrows
37,179
Factor Arrows
32,393

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, 2393

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 3 x 2,393 = 689,184

This can also be written as 25 x 32 x 2,3931 = 689,184

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


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