Q: What are the prime factors of the number 77,192,390?

 A: 2, 5, 11, 73, 9613

Why are those the prime factors of the number 77,192,390?

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 77,192,390

77,192,390
Factor Arrows
238,596,195
Factor Arrows
57,719,239
Factor Arrows
11701,749
Factor Arrows
739,613

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, 11, 73, 9613

We can check our work by multiplying all of the prime factors together: 2 x 5 x 11 x 73 x 9,613 = 77,192,390

This can also be written as 21 x 51 x 111 x 731 x 9,6131 = 77,192,390

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 77,192,390:


Ask a Question