Q: What are the prime factors of the number 3,780,810?

 A: 2, 3, 5, 11, 19, 67

Why are those the prime factors of the number 3,780,810?

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 3,780,810

3,780,810
Factor Arrows
21,890,405
Factor Arrows
3630,135
Factor Arrows
3210,045
Factor Arrows
370,015
Factor Arrows
514,003
Factor Arrows
111,273
Factor Arrows
1967

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, 5, 11, 19, 67

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 5 x 11 x 19 x 67 = 3,780,810

This can also be written as 21 x 33 x 51 x 111 x 191 x 671 = 3,780,810

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


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