diff --git a/Algorithms.lua b/Algorithms.lua
index 9c7761e..4ef6d6e 100644
--- a/Algorithms.lua
+++ b/Algorithms.lua
@@ -126,7 +126,7 @@ function isPrime(possiblePrime)
 	elseif(((possiblePrime % 2) == 0) or ((possiblePrime % 3) == 0)) then
 		return false;
 	end
-	for cnt = 5, math.sqrt(possiblePrime), 6 do
+	for cnt = 5, math.sqrt(possiblePrime) + 1, 6 do
 		if(((possiblePrime % cnt) == 0) or ((possiblePrime % (cnt + 2)) == 0)) then
 			return false;
 		end