Q: What are the prime factors of the number 1,109,160?

 A: 2, 3, 5, 13, 79

Why are those the prime factors of the number 1,109,160?

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 1,109,160

1,109,160
Factor Arrows
2554,580
Factor Arrows
2277,290
Factor Arrows
2138,645
Factor Arrows
346,215
Factor Arrows
315,405
Factor Arrows
35,135
Factor Arrows
51,027
Factor Arrows
1379

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, 79

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 5 x 13 x 79 = 1,109,160

This can also be written as 23 x 33 x 51 x 131 x 791 = 1,109,160

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


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