Q: What are the prime factors of the number 300,691,840?

 A: 2, 5, 89, 5279

Why are those the prime factors of the number 300,691,840?

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 300,691,840

300,691,840
Factor Arrows
2150,345,920
Factor Arrows
275,172,960
Factor Arrows
237,586,480
Factor Arrows
218,793,240
Factor Arrows
29,396,620
Factor Arrows
24,698,310
Factor Arrows
22,349,155
Factor Arrows
5469,831
Factor Arrows
895,279

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, 89, 5279

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 5 x 89 x 5,279 = 300,691,840

This can also be written as 27 x 51 x 891 x 5,2791 = 300,691,840

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


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