Q: What are the prime factors of the number 11,222,304?

 A: 2, 3, 29, 139

Why are those the prime factors of the number 11,222,304?

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 11,222,304

11,222,304
Factor Arrows
25,611,152
Factor Arrows
22,805,576
Factor Arrows
21,402,788
Factor Arrows
2701,394
Factor Arrows
2350,697
Factor Arrows
3116,899
Factor Arrows
294,031
Factor Arrows
29139

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, 29, 139

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 29 x 29 x 139 = 11,222,304

This can also be written as 25 x 31 x 292 x 1391 = 11,222,304

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


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