Q: What are the prime factors of the number 18,344,928?

 A: 2, 3, 7, 27299

Why are those the prime factors of the number 18,344,928?

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 18,344,928

18,344,928
Factor Arrows
29,172,464
Factor Arrows
24,586,232
Factor Arrows
22,293,116
Factor Arrows
21,146,558
Factor Arrows
2573,279
Factor Arrows
3191,093
Factor Arrows
727,299

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, 7, 27299

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 7 x 27,299 = 18,344,928

This can also be written as 25 x 31 x 71 x 27,2991 = 18,344,928

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


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