Update README.md

4 years ago · 25c525dcb3
1 changed files with 2 additions and 0 deletions
--- a/subjects/isprime/README.md
+++ b/subjects/isprime/README.md
@ -6,6 +6,8 @@ Write a function that returns `true` if the `int` passed as parameter is a prime

 The function must be optimized in order to avoid time-outs with the tester.

+(We consider that only positive numbers can be prime numbers)
+
 ### Expected function

 ```go