Q: What are the prime factors of the number 2,811,783?

 A: 3, 13, 17, 4241

Why are those the prime factors of the number 2,811,783?

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 2,811,783

2,811,783
Factor Arrows
3937,261
Factor Arrows
1372,097
Factor Arrows
174,241

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:

3, 13, 17, 4241

We can check our work by multiplying all of the prime factors together: 3 x 13 x 17 x 4,241 = 2,811,783

This can also be written as 31 x 131 x 171 x 4,2411 = 2,811,783

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


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