Q: What are the prime factors of the number 261,615,228?

 A: 2, 3, 7, 181, 17207

Why are those the prime factors of the number 261,615,228?

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 261,615,228

261,615,228
Factor Arrows
2130,807,614
Factor Arrows
265,403,807
Factor Arrows
321,801,269
Factor Arrows
73,114,467
Factor Arrows
18117,207

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, 7, 181, 17207

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 7 x 181 x 17,207 = 261,615,228

This can also be written as 22 x 31 x 71 x 1811 x 17,2071 = 261,615,228

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 261,615,228:


Ask a Question