Q: What are the prime factors of the number 649,818?

 A: 2, 3, 13, 2777

Why are those the prime factors of the number 649,818?

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 649,818

649,818
Factor Arrows
2324,909
Factor Arrows
3108,303
Factor Arrows
336,101
Factor Arrows
132,777

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, 13, 2777

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 13 x 2,777 = 649,818

This can also be written as 21 x 32 x 131 x 2,7771 = 649,818

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


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