Q: What are the prime factors of the number 689,024?

 A: 2, 7, 769

Why are those the prime factors of the number 689,024?

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 689,024

689,024
Factor Arrows
2344,512
Factor Arrows
2172,256
Factor Arrows
286,128
Factor Arrows
243,064
Factor Arrows
221,532
Factor Arrows
210,766
Factor Arrows
25,383
Factor Arrows
7769

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, 7, 769

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 7 x 769 = 689,024

This can also be written as 27 x 71 x 7691 = 689,024

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


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