Q: What are the prime factors of the number 27,131,220?

 A: 2, 3, 5, 47, 1069

Why are those the prime factors of the number 27,131,220?

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 27,131,220

27,131,220
Factor Arrows
213,565,610
Factor Arrows
26,782,805
Factor Arrows
32,260,935
Factor Arrows
3753,645
Factor Arrows
3251,215
Factor Arrows
550,243
Factor Arrows
471,069

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, 5, 47, 1069

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 5 x 47 x 1,069 = 27,131,220

This can also be written as 22 x 33 x 51 x 471 x 1,0691 = 27,131,220

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


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