Q: What are the prime factors of the number 109,147,208?

 A: 2, 17, 2777

Why are those the prime factors of the number 109,147,208?

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 109,147,208

109,147,208
Factor Arrows
254,573,604
Factor Arrows
227,286,802
Factor Arrows
213,643,401
Factor Arrows
17802,553
Factor Arrows
1747,209
Factor Arrows
172,777

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, 2777

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 17 x 17 x 17 x 2,777 = 109,147,208

This can also be written as 23 x 173 x 2,7771 = 109,147,208

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


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