Q: What are the prime factors of the number 100,808,218?

 A: 2, 7, 23, 31, 10099

Why are those the prime factors of the number 100,808,218?

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 100,808,218

100,808,218
Factor Arrows
250,404,109
Factor Arrows
77,200,587
Factor Arrows
23313,069
Factor Arrows
3110,099

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, 7, 23, 31, 10099

We can check our work by multiplying all of the prime factors together: 2 x 7 x 23 x 31 x 10,099 = 100,808,218

This can also be written as 21 x 71 x 231 x 311 x 10,0991 = 100,808,218

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


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