Q: What are the prime factors of the number 28,626,688?

 A: 2, 67, 1669

Why are those the prime factors of the number 28,626,688?

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 28,626,688

28,626,688
Factor Arrows
214,313,344
Factor Arrows
27,156,672
Factor Arrows
23,578,336
Factor Arrows
21,789,168
Factor Arrows
2894,584
Factor Arrows
2447,292
Factor Arrows
2223,646
Factor Arrows
2111,823
Factor Arrows
671,669

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, 67, 1669

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 67 x 1,669 = 28,626,688

This can also be written as 28 x 671 x 1,6691 = 28,626,688

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


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