Q: What are the prime factors of the number 422,448,160?

 A: 2, 5, 31, 53, 1607

Why are those the prime factors of the number 422,448,160?

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 422,448,160

422,448,160
Factor Arrows
2211,224,080
Factor Arrows
2105,612,040
Factor Arrows
252,806,020
Factor Arrows
226,403,010
Factor Arrows
213,201,505
Factor Arrows
52,640,301
Factor Arrows
3185,171
Factor Arrows
531,607

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, 31, 53, 1607

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 31 x 53 x 1,607 = 422,448,160

This can also be written as 25 x 51 x 311 x 531 x 1,6071 = 422,448,160

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


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