Q: What are the prime factors of the number 11,224,528?

 A: 2, 7, 103, 139

Why are those the prime factors of the number 11,224,528?

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 11,224,528

11,224,528
Factor Arrows
25,612,264
Factor Arrows
22,806,132
Factor Arrows
21,403,066
Factor Arrows
2701,533
Factor Arrows
7100,219
Factor Arrows
714,317
Factor Arrows
103139

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, 7, 103, 139

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 7 x 7 x 103 x 139 = 11,224,528

This can also be written as 24 x 72 x 1031 x 1391 = 11,224,528

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


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