Q: What are the prime factors of the number 645,036,216?

 A: 2, 3, 11, 181, 13499

Why are those the prime factors of the number 645,036,216?

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 645,036,216

645,036,216
Factor Arrows
2322,518,108
Factor Arrows
2161,259,054
Factor Arrows
280,629,527
Factor Arrows
326,876,509
Factor Arrows
112,443,319
Factor Arrows
18113,499

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, 11, 181, 13499

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 11 x 181 x 13,499 = 645,036,216

This can also be written as 23 x 31 x 111 x 1811 x 13,4991 = 645,036,216

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 645,036,216:


Ask a Question