Q: What are the prime factors of the number 9,505,280?

 A: 2, 5, 47, 79

Why are those the prime factors of the number 9,505,280?

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 9,505,280

9,505,280
Factor Arrows
24,752,640
Factor Arrows
22,376,320
Factor Arrows
21,188,160
Factor Arrows
2594,080
Factor Arrows
2297,040
Factor Arrows
2148,520
Factor Arrows
274,260
Factor Arrows
237,130
Factor Arrows
218,565
Factor Arrows
53,713
Factor Arrows
4779

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, 47, 79

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 2 x 2 x 5 x 47 x 79 = 9,505,280

This can also be written as 29 x 51 x 471 x 791 = 9,505,280

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


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