Q: What are the prime factors of the number 17,808,219?

 A: 3, 11, 13, 101, 137

Why are those the prime factors of the number 17,808,219?

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 17,808,219

17,808,219
Factor Arrows
35,936,073
Factor Arrows
31,978,691
Factor Arrows
11179,881
Factor Arrows
1313,837
Factor Arrows
101137

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, 11, 13, 101, 137

We can check our work by multiplying all of the prime factors together: 3 x 3 x 11 x 13 x 101 x 137 = 17,808,219

This can also be written as 32 x 111 x 131 x 1011 x 1371 = 17,808,219

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


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