Q: What are the prime factors of the number 18,141,408?

 A: 2, 3, 2333

Why are those the prime factors of the number 18,141,408?

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 18,141,408

18,141,408
Factor Arrows
29,070,704
Factor Arrows
24,535,352
Factor Arrows
22,267,676
Factor Arrows
21,133,838
Factor Arrows
2566,919
Factor Arrows
3188,973
Factor Arrows
362,991
Factor Arrows
320,997
Factor Arrows
36,999
Factor Arrows
32,333

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, 2333

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3 x 3 x 3 x 2,333 = 18,141,408

This can also be written as 25 x 35 x 2,3331 = 18,141,408

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


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