Q: What are the prime factors of the number 121,203,201?

 A: 3, 7, 67, 86143

Why are those the prime factors of the number 121,203,201?

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 121,203,201

121,203,201
Factor Arrows
340,401,067
Factor Arrows
75,771,581
Factor Arrows
6786,143

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:

3, 7, 67, 86143

We can check our work by multiplying all of the prime factors together: 3 x 7 x 67 x 86,143 = 121,203,201

This can also be written as 31 x 71 x 671 x 86,1431 = 121,203,201

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 121,203,201:


Ask a Question