Q: What are the prime factors of the number 11,622,272?

 A: 2, 29, 31, 101

Why are those the prime factors of the number 11,622,272?

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 11,622,272

11,622,272
Factor Arrows
25,811,136
Factor Arrows
22,905,568
Factor Arrows
21,452,784
Factor Arrows
2726,392
Factor Arrows
2363,196
Factor Arrows
2181,598
Factor Arrows
290,799
Factor Arrows
293,131
Factor Arrows
31101

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, 29, 31, 101

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 29 x 31 x 101 = 11,622,272

This can also be written as 27 x 291 x 311 x 1011 = 11,622,272

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


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