Q: What are the prime factors of the number 817,003?

 A: 11, 17, 257

Why are those the prime factors of the number 817,003?

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 817,003

817,003
Factor Arrows
1174,273
Factor Arrows
174,369
Factor Arrows
17257

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:

11, 17, 257

We can check our work by multiplying all of the prime factors together: 11 x 17 x 17 x 257 = 817,003

This can also be written as 111 x 172 x 2571 = 817,003

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


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