Q: What are the prime factors of the number 8,311,266?

 A: 2, 3, 17, 157, 173

Why are those the prime factors of the number 8,311,266?

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 8,311,266

8,311,266
Factor Arrows
24,155,633
Factor Arrows
31,385,211
Factor Arrows
3461,737
Factor Arrows
1727,161
Factor Arrows
157173

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, 17, 157, 173

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 17 x 157 x 173 = 8,311,266

This can also be written as 21 x 32 x 171 x 1571 x 1731 = 8,311,266

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


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