Q: What are the prime factors of the number 18,724,095?

 A: 3, 5, 13, 47, 227

Why are those the prime factors of the number 18,724,095?

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 18,724,095

18,724,095
Factor Arrows
36,241,365
Factor Arrows
32,080,455
Factor Arrows
3693,485
Factor Arrows
5138,697
Factor Arrows
1310,669
Factor Arrows
47227

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:

3, 5, 13, 47, 227

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 5 x 13 x 47 x 227 = 18,724,095

This can also be written as 33 x 51 x 131 x 471 x 2271 = 18,724,095

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


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