Q: What are the prime factors of the number 2,907,684?

 A: 2, 3, 13, 19, 109

Why are those the prime factors of the number 2,907,684?

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 2,907,684

2,907,684
Factor Arrows
21,453,842
Factor Arrows
2726,921
Factor Arrows
3242,307
Factor Arrows
380,769
Factor Arrows
326,923
Factor Arrows
132,071
Factor Arrows
19109

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, 13, 19, 109

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 13 x 19 x 109 = 2,907,684

This can also be written as 22 x 33 x 131 x 191 x 1091 = 2,907,684

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


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