Q: What are the prime factors of the number 401,324,400?

 A: 2, 3, 5, 41, 2719

Why are those the prime factors of the number 401,324,400?

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 401,324,400

401,324,400
Factor Arrows
2200,662,200
Factor Arrows
2100,331,100
Factor Arrows
250,165,550
Factor Arrows
225,082,775
Factor Arrows
38,360,925
Factor Arrows
32,786,975
Factor Arrows
5557,395
Factor Arrows
5111,479
Factor Arrows
412,719

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, 5, 41, 2719

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 5 x 5 x 41 x 2,719 = 401,324,400

This can also be written as 24 x 32 x 52 x 411 x 2,7191 = 401,324,400

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 401,324,400:


Ask a Question