Q: What are the prime factors of the number 11,118,888?

 A: 2, 3, 11, 101, 139

Why are those the prime factors of the number 11,118,888?

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 11,118,888

11,118,888
Factor Arrows
25,559,444
Factor Arrows
22,779,722
Factor Arrows
21,389,861
Factor Arrows
3463,287
Factor Arrows
3154,429
Factor Arrows
1114,039
Factor Arrows
101139

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, 11, 101, 139

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 11 x 101 x 139 = 11,118,888

This can also be written as 23 x 32 x 111 x 1011 x 1391 = 11,118,888

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


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