Q: What are the prime factors of the number 689,560?

 A: 2, 5, 17239

Why are those the prime factors of the number 689,560?

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 689,560

689,560
Factor Arrows
2344,780
Factor Arrows
2172,390
Factor Arrows
286,195
Factor Arrows
517,239

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, 5, 17239

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 17,239 = 689,560

This can also be written as 23 x 51 x 17,2391 = 689,560

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


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