Q: What are the prime factors of the number 231,217,816?

 A: 2, 17, 47, 61, 593

Why are those the prime factors of the number 231,217,816?

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 231,217,816

231,217,816
Factor Arrows
2115,608,908
Factor Arrows
257,804,454
Factor Arrows
228,902,227
Factor Arrows
171,700,131
Factor Arrows
4736,173
Factor Arrows
61593

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, 17, 47, 61, 593

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 17 x 47 x 61 x 593 = 231,217,816

This can also be written as 23 x 171 x 471 x 611 x 5931 = 231,217,816

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


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