Q: What are the prime factors of the number 105,015,105?

 A: 3, 5, 13, 89, 2017

Why are those the prime factors of the number 105,015,105?

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 105,015,105

105,015,105
Factor Arrows
335,005,035
Factor Arrows
311,668,345
Factor Arrows
52,333,669
Factor Arrows
13179,513
Factor Arrows
892,017

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, 89, 2017

We can check our work by multiplying all of the prime factors together: 3 x 3 x 5 x 13 x 89 x 2,017 = 105,015,105

This can also be written as 32 x 51 x 131 x 891 x 2,0171 = 105,015,105

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


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