Q: What are the prime factors of the number 621,162,560?

 A: 2, 5, 191, 10163

Why are those the prime factors of the number 621,162,560?

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 621,162,560

621,162,560
Factor Arrows
2310,581,280
Factor Arrows
2155,290,640
Factor Arrows
277,645,320
Factor Arrows
238,822,660
Factor Arrows
219,411,330
Factor Arrows
29,705,665
Factor Arrows
51,941,133
Factor Arrows
19110,163

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, 191, 10163

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 191 x 10,163 = 621,162,560

This can also be written as 26 x 51 x 1911 x 10,1631 = 621,162,560

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 621,162,560:


Ask a Question