Q: What are the prime factors of the number 424,704?

 A: 2, 3, 7, 79

Why are those the prime factors of the number 424,704?

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 424,704

424,704
Factor Arrows
2212,352
Factor Arrows
2106,176
Factor Arrows
253,088
Factor Arrows
226,544
Factor Arrows
213,272
Factor Arrows
26,636
Factor Arrows
23,318
Factor Arrows
21,659
Factor Arrows
3553
Factor Arrows
779

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, 7, 79

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 7 x 79 = 424,704

This can also be written as 28 x 31 x 71 x 791 = 424,704

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


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