Q: What are the prime factors of the number 1,646,016?

 A: 2, 3, 8573

Why are those the prime factors of the number 1,646,016?

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 1,646,016

1,646,016
Factor Arrows
2823,008
Factor Arrows
2411,504
Factor Arrows
2205,752
Factor Arrows
2102,876
Factor Arrows
251,438
Factor Arrows
225,719
Factor Arrows
38,573

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, 8573

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 3 x 8,573 = 1,646,016

This can also be written as 26 x 31 x 8,5731 = 1,646,016

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


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