Q: What are the prime factors of the number 906,080?

 A: 2, 5, 7, 809

Why are those the prime factors of the number 906,080?

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 906,080

906,080
Factor Arrows
2453,040
Factor Arrows
2226,520
Factor Arrows
2113,260
Factor Arrows
256,630
Factor Arrows
228,315
Factor Arrows
55,663
Factor Arrows
7809

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, 5, 7, 809

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 7 x 809 = 906,080

This can also be written as 25 x 51 x 71 x 8091 = 906,080

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


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