Q: What are the prime factors of the number 187,408?

 A: 2, 13, 17, 53

Why are those the prime factors of the number 187,408?

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 187,408

187,408
Factor Arrows
293,704
Factor Arrows
246,852
Factor Arrows
223,426
Factor Arrows
211,713
Factor Arrows
13901
Factor Arrows
1753

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, 13, 17, 53

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 13 x 17 x 53 = 187,408

This can also be written as 24 x 131 x 171 x 531 = 187,408

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 187,408:


Ask a Question