Q: What are the prime factors of the number 18,089,406?

 A: 2, 3, 19, 653

Why are those the prime factors of the number 18,089,406?

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 18,089,406

18,089,406
Factor Arrows
29,044,703
Factor Arrows
33,014,901
Factor Arrows
31,004,967
Factor Arrows
3334,989
Factor Arrows
3111,663
Factor Arrows
337,221
Factor Arrows
312,407
Factor Arrows
19653

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, 19, 653

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 3 x 3 x 19 x 653 = 18,089,406

This can also be written as 21 x 36 x 191 x 6531 = 18,089,406

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


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