Q: What are the prime factors of the number 19,090,407?

 A: 3, 7, 401, 2267

Why are those the prime factors of the number 19,090,407?

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 19,090,407

19,090,407
Factor Arrows
36,363,469
Factor Arrows
7909,067
Factor Arrows
4012,267

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, 401, 2267

We can check our work by multiplying all of the prime factors together: 3 x 7 x 401 x 2,267 = 19,090,407

This can also be written as 31 x 71 x 4011 x 2,2671 = 19,090,407

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


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