Q: What are the prime factors of the number 809,146?

 A: 2, 13, 31121

Why are those the prime factors of the number 809,146?

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 809,146

809,146
Factor Arrows
2404,573
Factor Arrows
1331,121

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, 13, 31121

We can check our work by multiplying all of the prime factors together: 2 x 13 x 31,121 = 809,146

This can also be written as 21 x 131 x 31,1211 = 809,146

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


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