Q: What are the prime factors of the number 11,788,224?

 A: 2, 3, 7, 179

Why are those the prime factors of the number 11,788,224?

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 11,788,224

11,788,224
Factor Arrows
25,894,112
Factor Arrows
22,947,056
Factor Arrows
21,473,528
Factor Arrows
2736,764
Factor Arrows
2368,382
Factor Arrows
2184,191
Factor Arrows
361,397
Factor Arrows
78,771
Factor Arrows
71,253
Factor Arrows
7179

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, 7, 179

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 3 x 7 x 7 x 7 x 179 = 11,788,224

This can also be written as 26 x 31 x 73 x 1791 = 11,788,224

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


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