Q: What are the prime factors of the number 105,067,473?

 A: 3, 7, 19, 23, 107

Why are those the prime factors of the number 105,067,473?

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 105,067,473

105,067,473
Factor Arrows
335,022,491
Factor Arrows
75,003,213
Factor Arrows
19263,327
Factor Arrows
2311,449
Factor Arrows
107107

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, 7, 19, 23, 107

We can check our work by multiplying all of the prime factors together: 3 x 7 x 19 x 23 x 107 x 107 = 105,067,473

This can also be written as 31 x 71 x 191 x 231 x 1072 = 105,067,473

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


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