diff --git a/Algo/Séminaire/Exercices seminaire.md b/Algo/Séminaire/Exercices seminaire.md
index 76ac459..b8ed258 100644
--- a/Algo/Séminaire/Exercices seminaire.md	
+++ b/Algo/Séminaire/Exercices seminaire.md	
@@ -451,5 +451,10 @@ let prime n =
 		invalid_args "n should not be inferior to zero"
 	else if n mod 2 = 0 then
 		false
-	else
-		
\ No newline at end of file
+	else if n mod 3 = 0 then
+		false
+	else if n mod 5 = 0 then
+		false
+	else if n mod 7 = 0 then
+		false
+	else "nombre premier";;