Q: What are the prime factors of the number 18,366,144?

 A: 2, 3, 23, 4159

Why are those the prime factors of the number 18,366,144?

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 18,366,144

18,366,144
Factor Arrows
29,183,072
Factor Arrows
24,591,536
Factor Arrows
22,295,768
Factor Arrows
21,147,884
Factor Arrows
2573,942
Factor Arrows
2286,971
Factor Arrows
395,657
Factor Arrows
234,159

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, 23, 4159

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 23 x 4,159 = 18,366,144

This can also be written as 26 x 31 x 231 x 4,1591 = 18,366,144

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


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