Updated problems to be more in line with conventions

Problem3.lua

@@ -1,11 +1,11 @@
 --ProjectEuler/lua/Problem3.lua
 --Matthew Ellison
 -- Created: 02-04-19
---Modified: 03-28-19
+--Modified: 06-19-20
 --The largest prime factor of 600851475143
 --All of my requires, unless otherwise listed, can be found at https://bitbucket.org/Mattrixwv/luaClasses
 --[[
-	Copyright (C) 2019  Matthew Ellison
+	Copyright (C) 2020  Matthew Ellison
 
 	This program is free software: you can redistribute it and/or modify
 	it under the terms of the GNU Lesser General Public License as published by
@@ -26,13 +26,13 @@ require "Stopwatch"
 require "Algorithms"
 
 
-timer = Stopwatch:create();
+local timer = Stopwatch:create();
 timer:start();
 
 
 TARGET_NUMBER = 600851475143;
 --Get the factors of the number
-factors = getFactors(TARGET_NUMBER);
+local factors = getFactors(TARGET_NUMBER);
 timer:stop();
 
 --The largest number will be the answer