Q: What are the prime factors of the number 2,181,804?

 A: 2, 3, 113, 1609

Why are those the prime factors of the number 2,181,804?

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 2,181,804

2,181,804
Factor Arrows
21,090,902
Factor Arrows
2545,451
Factor Arrows
3181,817
Factor Arrows
1131,609

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, 113, 1609

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 113 x 1,609 = 2,181,804

This can also be written as 22 x 31 x 1131 x 1,6091 = 2,181,804

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


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