Q: What are the prime factors of the number 55,040,524?

 A: 2, 7, 11, 521

Why are those the prime factors of the number 55,040,524?

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 55,040,524

55,040,524
Factor Arrows
227,520,262
Factor Arrows
213,760,131
Factor Arrows
71,965,733
Factor Arrows
7280,819
Factor Arrows
740,117
Factor Arrows
75,731
Factor Arrows
11521

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, 11, 521

We can check our work by multiplying all of the prime factors together: 2 x 2 x 7 x 7 x 7 x 7 x 11 x 521 = 55,040,524

This can also be written as 22 x 74 x 111 x 5211 = 55,040,524

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


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