Q: What are the prime factors of the number 27,708,928?

 A: 2, 13, 23, 181

Why are those the prime factors of the number 27,708,928?

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 27,708,928

27,708,928
Factor Arrows
213,854,464
Factor Arrows
26,927,232
Factor Arrows
23,463,616
Factor Arrows
21,731,808
Factor Arrows
2865,904
Factor Arrows
2432,952
Factor Arrows
2216,476
Factor Arrows
2108,238
Factor Arrows
254,119
Factor Arrows
134,163
Factor Arrows
23181

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, 13, 23, 181

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 2 x 13 x 23 x 181 = 27,708,928

This can also be written as 29 x 131 x 231 x 1811 = 27,708,928

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


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