Q: What are the prime factors of the number 100,106,118?

 A: 2, 3, 7, 12611

Why are those the prime factors of the number 100,106,118?

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 100,106,118

100,106,118
Factor Arrows
250,053,059
Factor Arrows
316,684,353
Factor Arrows
35,561,451
Factor Arrows
31,853,817
Factor Arrows
3617,939
Factor Arrows
788,277
Factor Arrows
712,611

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, 3, 7, 12611

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 7 x 7 x 12,611 = 100,106,118

This can also be written as 21 x 34 x 72 x 12,6111 = 100,106,118

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


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