Q: What are the prime factors of the number 300,040,320?

 A: 2, 3, 5, 31, 71

Why are those the prime factors of the number 300,040,320?

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 300,040,320

300,040,320
Factor Arrows
2150,020,160
Factor Arrows
275,010,080
Factor Arrows
237,505,040
Factor Arrows
218,752,520
Factor Arrows
29,376,260
Factor Arrows
24,688,130
Factor Arrows
22,344,065
Factor Arrows
3781,355
Factor Arrows
5156,271
Factor Arrows
315,041
Factor Arrows
7171

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, 31, 71

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 5 x 31 x 71 x 71 = 300,040,320

This can also be written as 27 x 31 x 51 x 311 x 712 = 300,040,320

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


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