Q: What are the prime factors of the number 320,032,020?

 A: 2, 3, 5, 7, 11, 53, 1307

Why are those the prime factors of the number 320,032,020?

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 320,032,020

320,032,020
Factor Arrows
2160,016,010
Factor Arrows
280,008,005
Factor Arrows
326,669,335
Factor Arrows
55,333,867
Factor Arrows
7761,981
Factor Arrows
1169,271
Factor Arrows
531,307

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, 7, 11, 53, 1307

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 7 x 11 x 53 x 1,307 = 320,032,020

This can also be written as 22 x 31 x 51 x 71 x 111 x 531 x 1,3071 = 320,032,020

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


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