Q: What are the prime factors of the number 77,938,160?

 A: 2, 5, 281, 3467

Why are those the prime factors of the number 77,938,160?

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 77,938,160

77,938,160
Factor Arrows
238,969,080
Factor Arrows
219,484,540
Factor Arrows
29,742,270
Factor Arrows
24,871,135
Factor Arrows
5974,227
Factor Arrows
2813,467

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, 281, 3467

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 281 x 3,467 = 77,938,160

This can also be written as 24 x 51 x 2811 x 3,4671 = 77,938,160

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 77,938,160:


Ask a Question