Q: What are the prime factors of the number 322,110,320?

 A: 2, 5, 7, 82171

Why are those the prime factors of the number 322,110,320?

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 322,110,320

322,110,320
Factor Arrows
2161,055,160
Factor Arrows
280,527,580
Factor Arrows
240,263,790
Factor Arrows
220,131,895
Factor Arrows
54,026,379
Factor Arrows
7575,197
Factor Arrows
782,171

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, 82171

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 7 x 7 x 82,171 = 322,110,320

This can also be written as 24 x 51 x 72 x 82,1711 = 322,110,320

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


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