Q: What are the prime factors of the number 19,026,819?

 A: 3, 7, 23, 1459

Why are those the prime factors of the number 19,026,819?

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 19,026,819

19,026,819
Factor Arrows
36,342,273
Factor Arrows
32,114,091
Factor Arrows
3704,697
Factor Arrows
3234,899
Factor Arrows
733,557
Factor Arrows
231,459

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, 7, 23, 1459

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 7 x 23 x 1,459 = 19,026,819

This can also be written as 34 x 71 x 231 x 1,4591 = 19,026,819

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


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