goldbach x = [(a, x-a )| a <- [1..(div x 2)], isPrime a, isPrime (x - a)]
isGoldbach x = [] /= goldbach x
filter (not. isGoldbach) [4,6..]
More than 3 years have passed since last update.
Register as a new user and use Qiita more conveniently
- You get articles that match your needs
- You can efficiently read back useful information
- You can use dark theme
List of users who liked
21