Q: What are the prime factors of the number 19,191,912?

 A: 2, 3, 17, 2767

Why are those the prime factors of the number 19,191,912?

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 19,191,912

19,191,912
Factor Arrows
29,595,956
Factor Arrows
24,797,978
Factor Arrows
22,398,989
Factor Arrows
3799,663
Factor Arrows
1747,039
Factor Arrows
172,767

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, 3, 17, 2767

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 17 x 17 x 2,767 = 19,191,912

This can also be written as 23 x 31 x 172 x 2,7671 = 19,191,912

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


More Examples

Here are some more numbers to try:

Try the factor calculator

Explore more about the number 19,191,912:


Ask a Question