2015-07-22 16:44:07 -04:00

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Markdown

Largest Prime Factor
====================
Write a function that takes a number as input, and returns the largest prime factor of a given number. If the number is prime itself, then it's largest prime factor is itself.
```
largest_prime(15) # 5
largest_prime(18) # 3
largest_prime(19) # 19
largest_prime(302) # 151
```