Q: What are the prime factors of the number 2,166,048?

 A: 2, 3, 23, 109

Why are those the prime factors of the number 2,166,048?

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 2,166,048

2,166,048
Factor Arrows
21,083,024
Factor Arrows
2541,512
Factor Arrows
2270,756
Factor Arrows
2135,378
Factor Arrows
267,689
Factor Arrows
322,563
Factor Arrows
37,521
Factor Arrows
32,507
Factor Arrows
23109

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, 23, 109

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3 x 23 x 109 = 2,166,048

This can also be written as 25 x 33 x 231 x 1091 = 2,166,048

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


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