Q: What are the prime factors of the number 19,211,698?

 A: 2, 11, 19, 41, 59

Why are those the prime factors of the number 19,211,698?

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 19,211,698

19,211,698
Factor Arrows
29,605,849
Factor Arrows
11873,259
Factor Arrows
1945,961
Factor Arrows
192,419
Factor Arrows
4159

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, 11, 19, 41, 59

We can check our work by multiplying all of the prime factors together: 2 x 11 x 19 x 19 x 41 x 59 = 19,211,698

This can also be written as 21 x 111 x 192 x 411 x 591 = 19,211,698

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


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