Q: What are the prime factors of the number 30,771,224?

 A: 2, 11, 17, 67, 307

Why are those the prime factors of the number 30,771,224?

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 30,771,224

30,771,224
Factor Arrows
215,385,612
Factor Arrows
27,692,806
Factor Arrows
23,846,403
Factor Arrows
11349,673
Factor Arrows
1720,569
Factor Arrows
67307

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, 11, 17, 67, 307

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 11 x 17 x 67 x 307 = 30,771,224

This can also be written as 23 x 111 x 171 x 671 x 3071 = 30,771,224

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


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