Q: What are the prime factors of the number 100,266,368?

 A: 2, 43, 18217

Why are those the prime factors of the number 100,266,368?

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 100,266,368

100,266,368
Factor Arrows
250,133,184
Factor Arrows
225,066,592
Factor Arrows
212,533,296
Factor Arrows
26,266,648
Factor Arrows
23,133,324
Factor Arrows
21,566,662
Factor Arrows
2783,331
Factor Arrows
4318,217

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, 43, 18217

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 43 x 18,217 = 100,266,368

This can also be written as 27 x 431 x 18,2171 = 100,266,368

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


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