Q: What are the prime factors of the number 1,266,816?

 A: 2, 3, 3299

Why are those the prime factors of the number 1,266,816?

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 1,266,816

1,266,816
Factor Arrows
2633,408
Factor Arrows
2316,704
Factor Arrows
2158,352
Factor Arrows
279,176
Factor Arrows
239,588
Factor Arrows
219,794
Factor Arrows
29,897
Factor Arrows
33,299

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, 3299

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 2 x 3 x 3,299 = 1,266,816

This can also be written as 27 x 31 x 3,2991 = 1,266,816

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


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