Q: What are the prime factors of the number 29,128,890?

 A: 2, 3, 5, 7, 59, 2351

Why are those the prime factors of the number 29,128,890?

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 29,128,890

29,128,890
Factor Arrows
214,564,445
Factor Arrows
34,854,815
Factor Arrows
5970,963
Factor Arrows
7138,709
Factor Arrows
592,351

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, 5, 7, 59, 2351

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 7 x 59 x 2,351 = 29,128,890

This can also be written as 21 x 31 x 51 x 71 x 591 x 2,3511 = 29,128,890

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 29,128,890:


Ask a Question