Q: What are the prime factors of the number 6,777,344?

 A: 2, 7, 31, 61

Why are those the prime factors of the number 6,777,344?

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 6,777,344

6,777,344
Factor Arrows
23,388,672
Factor Arrows
21,694,336
Factor Arrows
2847,168
Factor Arrows
2423,584
Factor Arrows
2211,792
Factor Arrows
2105,896
Factor Arrows
252,948
Factor Arrows
226,474
Factor Arrows
213,237
Factor Arrows
71,891
Factor Arrows
3161

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, 31, 61

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 2 x 2 x 7 x 31 x 61 = 6,777,344

This can also be written as 29 x 71 x 311 x 611 = 6,777,344

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


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