Q: What are the prime factors of the number 13,040,544?

 A: 2, 3, 11, 53, 233

Why are those the prime factors of the number 13,040,544?

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 13,040,544

13,040,544
Factor Arrows
26,520,272
Factor Arrows
23,260,136
Factor Arrows
21,630,068
Factor Arrows
2815,034
Factor Arrows
2407,517
Factor Arrows
3135,839
Factor Arrows
1112,349
Factor Arrows
53233

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, 11, 53, 233

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 11 x 53 x 233 = 13,040,544

This can also be written as 25 x 31 x 111 x 531 x 2331 = 13,040,544

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


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