Q: What are the prime factors of the number 11,840,768?

 A: 2, 23, 2011

Why are those the prime factors of the number 11,840,768?

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 11,840,768

11,840,768
Factor Arrows
25,920,384
Factor Arrows
22,960,192
Factor Arrows
21,480,096
Factor Arrows
2740,048
Factor Arrows
2370,024
Factor Arrows
2185,012
Factor Arrows
292,506
Factor Arrows
246,253
Factor Arrows
232,011

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, 23, 2011

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 23 x 2,011 = 11,840,768

This can also be written as 28 x 231 x 2,0111 = 11,840,768

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


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