Q: What are the prime factors of the number 424,480?

 A: 2, 5, 7, 379

Why are those the prime factors of the number 424,480?

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 424,480

424,480
Factor Arrows
2212,240
Factor Arrows
2106,120
Factor Arrows
253,060
Factor Arrows
226,530
Factor Arrows
213,265
Factor Arrows
52,653
Factor Arrows
7379

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, 7, 379

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 7 x 379 = 424,480

This can also be written as 25 x 51 x 71 x 3791 = 424,480

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


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