Q: What are the prime factors of the number 300,420,320?

 A: 2, 5, 821, 2287

Why are those the prime factors of the number 300,420,320?

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 300,420,320

300,420,320
Factor Arrows
2150,210,160
Factor Arrows
275,105,080
Factor Arrows
237,552,540
Factor Arrows
218,776,270
Factor Arrows
29,388,135
Factor Arrows
51,877,627
Factor Arrows
8212,287

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, 821, 2287

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 821 x 2,287 = 300,420,320

This can also be written as 25 x 51 x 8211 x 2,2871 = 300,420,320

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


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