Q: What are the prime factors of the number 51,321,280?

 A: 2, 5, 19, 23, 367

Why are those the prime factors of the number 51,321,280?

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 51,321,280

51,321,280
Factor Arrows
225,660,640
Factor Arrows
212,830,320
Factor Arrows
26,415,160
Factor Arrows
23,207,580
Factor Arrows
21,603,790
Factor Arrows
2801,895
Factor Arrows
5160,379
Factor Arrows
198,441
Factor Arrows
23367

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, 5, 19, 23, 367

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 5 x 19 x 23 x 367 = 51,321,280

This can also be written as 26 x 51 x 191 x 231 x 3671 = 51,321,280

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 51,321,280:


Ask a Question