Q: What are the prime factors of the number 1,116,960?

 A: 2, 3, 5, 13, 179

Why are those the prime factors of the number 1,116,960?

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 1,116,960

1,116,960
Factor Arrows
2558,480
Factor Arrows
2279,240
Factor Arrows
2139,620
Factor Arrows
269,810
Factor Arrows
234,905
Factor Arrows
311,635
Factor Arrows
52,327
Factor Arrows
13179

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, 179

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 5 x 13 x 179 = 1,116,960

This can also be written as 25 x 31 x 51 x 131 x 1791 = 1,116,960

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


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