Q: What are the prime factors of the number 305,216?

 A: 2, 19, 251

Why are those the prime factors of the number 305,216?

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 305,216

305,216
Factor Arrows
2152,608
Factor Arrows
276,304
Factor Arrows
238,152
Factor Arrows
219,076
Factor Arrows
29,538
Factor Arrows
24,769
Factor Arrows
19251

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, 19, 251

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 19 x 251 = 305,216

This can also be written as 26 x 191 x 2511 = 305,216

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 305,216:


Ask a Question