Q: What are the prime factors of the number 109,936,905?

 A: 3, 5, 13, 73, 7723

Why are those the prime factors of the number 109,936,905?

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 109,936,905

109,936,905
Factor Arrows
336,645,635
Factor Arrows
57,329,127
Factor Arrows
13563,779
Factor Arrows
737,723

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:

3, 5, 13, 73, 7723

We can check our work by multiplying all of the prime factors together: 3 x 5 x 13 x 73 x 7,723 = 109,936,905

This can also be written as 31 x 51 x 131 x 731 x 7,7231 = 109,936,905

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


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