Q: What are the prime factors of the number 1,646,708?

 A: 2, 7, 23, 2557

Why are those the prime factors of the number 1,646,708?

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 1,646,708

1,646,708
Factor Arrows
2823,354
Factor Arrows
2411,677
Factor Arrows
758,811
Factor Arrows
232,557

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, 23, 2557

We can check our work by multiplying all of the prime factors together: 2 x 2 x 7 x 23 x 2,557 = 1,646,708

This can also be written as 22 x 71 x 231 x 2,5571 = 1,646,708

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


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