Q: What are the prime factors of the number 3,085,020?

 A: 2, 3, 5, 29, 197

Why are those the prime factors of the number 3,085,020?

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 3,085,020

3,085,020
Factor Arrows
21,542,510
Factor Arrows
2771,255
Factor Arrows
3257,085
Factor Arrows
385,695
Factor Arrows
328,565
Factor Arrows
55,713
Factor Arrows
29197

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, 29, 197

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 5 x 29 x 197 = 3,085,020

This can also be written as 22 x 33 x 51 x 291 x 1971 = 3,085,020

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


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