Q: What are the prime factors of the number 493,824?

 A: 2, 3, 643

Why are those the prime factors of the number 493,824?

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 493,824

493,824
Factor Arrows
2246,912
Factor Arrows
2123,456
Factor Arrows
261,728
Factor Arrows
230,864
Factor Arrows
215,432
Factor Arrows
27,716
Factor Arrows
23,858
Factor Arrows
21,929
Factor Arrows
3643

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, 643

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 2 x 3 x 643 = 493,824

This can also be written as 28 x 31 x 6431 = 493,824

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


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