Q: What are the prime factors of the number 19,398,841?

 A: 7, 11, 37, 619

Why are those the prime factors of the number 19,398,841?

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 19,398,841

19,398,841
Factor Arrows
72,771,263
Factor Arrows
11251,933
Factor Arrows
1122,903
Factor Arrows
37619

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:

7, 11, 37, 619

We can check our work by multiplying all of the prime factors together: 7 x 11 x 11 x 37 x 619 = 19,398,841

This can also be written as 71 x 112 x 371 x 6191 = 19,398,841

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


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