Q: What are the prime factors of the number 105,317,010?

 A: 2, 3, 5, 130021

Why are those the prime factors of the number 105,317,010?

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 105,317,010

105,317,010
Factor Arrows
252,658,505
Factor Arrows
317,552,835
Factor Arrows
35,850,945
Factor Arrows
31,950,315
Factor Arrows
3650,105
Factor Arrows
5130,021

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, 5, 130021

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 5 x 130,021 = 105,317,010

This can also be written as 21 x 34 x 51 x 130,0211 = 105,317,010

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


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