Q: What are the prime factors of the number 1,646,676?

 A: 2, 3, 79, 193

Why are those the prime factors of the number 1,646,676?

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 1,646,676

1,646,676
Factor Arrows
2823,338
Factor Arrows
2411,669
Factor Arrows
3137,223
Factor Arrows
345,741
Factor Arrows
315,247
Factor Arrows
79193

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, 79, 193

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 79 x 193 = 1,646,676

This can also be written as 22 x 33 x 791 x 1931 = 1,646,676

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


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