Q: What are the prime factors of the number 28,884,960?

 A: 2, 3, 5, 13, 1543

Why are those the prime factors of the number 28,884,960?

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 28,884,960

28,884,960
Factor Arrows
214,442,480
Factor Arrows
27,221,240
Factor Arrows
23,610,620
Factor Arrows
21,805,310
Factor Arrows
2902,655
Factor Arrows
3300,885
Factor Arrows
3100,295
Factor Arrows
520,059
Factor Arrows
131,543

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, 13, 1543

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 5 x 13 x 1,543 = 28,884,960

This can also be written as 25 x 32 x 51 x 131 x 1,5431 = 28,884,960

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


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