Q: What are the prime factors of the number 84,171,824?

 A: 2, 11, 19, 25171

Why are those the prime factors of the number 84,171,824?

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 84,171,824

84,171,824
Factor Arrows
242,085,912
Factor Arrows
221,042,956
Factor Arrows
210,521,478
Factor Arrows
25,260,739
Factor Arrows
11478,249
Factor Arrows
1925,171

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, 25171

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 11 x 19 x 25,171 = 84,171,824

This can also be written as 24 x 111 x 191 x 25,1711 = 84,171,824

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 84,171,824:


Ask a Question