227 is the natural number between 226 and 228. It is also a prime number.
In mathematics[edit]
227 is a prime number,[1] and a twin prime with 229 (thus 227 is a Chen prime). 223 plus 4 is 227, so they are cousin primes. 227 plus 6 is 233, making 227 and 233 sexy primes; furthermore, 227, 233, and 239 form a sexy prime triplet.
Since (227 - 1)/2 is 113, also a prime, 227 is a safe prime.
It is also a regular prime. 227 is an Eisenstein prime with no imaginary part, and also a Gaussian prime. 227 is a Stern prime since it is not of the form
.
It can be written as the sum of the sum and the product of the first four primes: ![(2 + 3 + 5 + 7)+(2 imes 3 imes 5 imes 7) = 227](http://upload.wikimedia.org/math/f/7/1/f713df321e6cc3f882096fd3d21168f1.png)
In popular culture[edit]
References[edit]
- ^ http://primes.utm.edu/curios/page.php/227.html
http://primes.utm.edu/curios/page.php/227.html