Q: What are the prime factors of the number 19,797,723?

 A: 3, 11, 191, 349

Why are those the prime factors of the number 19,797,723?

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 19,797,723

19,797,723
Factor Arrows
36,599,241
Factor Arrows
32,199,747
Factor Arrows
3733,249
Factor Arrows
1166,659
Factor Arrows
191349

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, 11, 191, 349

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 11 x 191 x 349 = 19,797,723

This can also be written as 33 x 111 x 1911 x 3491 = 19,797,723

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


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