Q: What are the prime factors of the number 819,366?

 A: 2, 3, 17, 29, 277

Why are those the prime factors of the number 819,366?

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 819,366

819,366
Factor Arrows
2409,683
Factor Arrows
3136,561
Factor Arrows
178,033
Factor Arrows
29277

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, 29, 277

We can check our work by multiplying all of the prime factors together: 2 x 3 x 17 x 29 x 277 = 819,366

This can also be written as 21 x 31 x 171 x 291 x 2771 = 819,366

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


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