Q: What are the prime factors of the number 817,830?

 A: 2, 3, 5, 13, 233

Why are those the prime factors of the number 817,830?

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 817,830

817,830
Factor Arrows
2408,915
Factor Arrows
3136,305
Factor Arrows
345,435
Factor Arrows
315,145
Factor Arrows
53,029
Factor Arrows
13233

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, 13, 233

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 5 x 13 x 233 = 817,830

This can also be written as 21 x 33 x 51 x 131 x 2331 = 817,830

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


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