Q: What are the prime factors of the number 13,778,856?

 A: 2, 3, 7, 13, 701

Why are those the prime factors of the number 13,778,856?

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 13,778,856

13,778,856
Factor Arrows
26,889,428
Factor Arrows
23,444,714
Factor Arrows
21,722,357
Factor Arrows
3574,119
Factor Arrows
3191,373
Factor Arrows
363,791
Factor Arrows
79,113
Factor Arrows
13701

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, 7, 13, 701

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 7 x 13 x 701 = 13,778,856

This can also be written as 23 x 33 x 71 x 131 x 7011 = 13,778,856

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 13,778,856:


Ask a Question