Q: What are the prime factors of the number 405,271,460?

 A: 2, 5, 11, 199, 9257

Why are those the prime factors of the number 405,271,460?

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 405,271,460

405,271,460
Factor Arrows
2202,635,730
Factor Arrows
2101,317,865
Factor Arrows
520,263,573
Factor Arrows
111,842,143
Factor Arrows
1999,257

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, 199, 9257

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 11 x 199 x 9,257 = 405,271,460

This can also be written as 22 x 51 x 111 x 1991 x 9,2571 = 405,271,460

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 405,271,460:


Ask a Question