Q: What are the prime factors of the number 11,105,792?

 A: 2, 109, 199

Why are those the prime factors of the number 11,105,792?

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 11,105,792

11,105,792
Factor Arrows
25,552,896
Factor Arrows
22,776,448
Factor Arrows
21,388,224
Factor Arrows
2694,112
Factor Arrows
2347,056
Factor Arrows
2173,528
Factor Arrows
286,764
Factor Arrows
243,382
Factor Arrows
221,691
Factor Arrows
109199

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, 109, 199

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 109 x 199 = 11,105,792

This can also be written as 29 x 1091 x 1991 = 11,105,792

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


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