Q: What are the prime factors of the number 422,212,320?

 A: 2, 3, 5, 101, 2903

Why are those the prime factors of the number 422,212,320?

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 422,212,320

422,212,320
Factor Arrows
2211,106,160
Factor Arrows
2105,553,080
Factor Arrows
252,776,540
Factor Arrows
226,388,270
Factor Arrows
213,194,135
Factor Arrows
34,398,045
Factor Arrows
31,466,015
Factor Arrows
5293,203
Factor Arrows
1012,903

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, 5, 101, 2903

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 5 x 101 x 2,903 = 422,212,320

This can also be written as 25 x 32 x 51 x 1011 x 2,9031 = 422,212,320

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


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