Q: What are the prime factors of the number 11,768,900?

 A: 2, 5, 11, 13, 823

Why are those the prime factors of the number 11,768,900?

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 11,768,900

11,768,900
Factor Arrows
25,884,450
Factor Arrows
22,942,225
Factor Arrows
5588,445
Factor Arrows
5117,689
Factor Arrows
1110,699
Factor Arrows
13823

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, 5, 11, 13, 823

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 5 x 11 x 13 x 823 = 11,768,900

This can also be written as 22 x 52 x 111 x 131 x 8231 = 11,768,900

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


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