Q: What are the prime factors of the number 491,218?

 A: 2, 7, 13, 2699

Why are those the prime factors of the number 491,218?

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 491,218

491,218
Factor Arrows
2245,609
Factor Arrows
735,087
Factor Arrows
132,699

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, 7, 13, 2699

We can check our work by multiplying all of the prime factors together: 2 x 7 x 13 x 2,699 = 491,218

This can also be written as 21 x 71 x 131 x 2,6991 = 491,218

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


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