Q: What are the prime factors of the number 11,158,144?

 A: 2, 179, 487

Why are those the prime factors of the number 11,158,144?

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 11,158,144

11,158,144
Factor Arrows
25,579,072
Factor Arrows
22,789,536
Factor Arrows
21,394,768
Factor Arrows
2697,384
Factor Arrows
2348,692
Factor Arrows
2174,346
Factor Arrows
287,173
Factor Arrows
179487

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, 179, 487

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 179 x 487 = 11,158,144

This can also be written as 27 x 1791 x 4871 = 11,158,144

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


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