Thank you very much for the reply! That's a really interesting consideration, it's quite astounding the difference in time recorded: I also saw ~5s difference which is brilliant.
In regard to the Total[Table[...]] and Sum[...], I really like that way of looking at it. It's another nice example too, at least in my eyes, of how the two both have their purposes, depending on whether anyone else will be looking at the code.
That is odd how my timing varies so much compared to yours though, I'll have to try and check it out; I'm not sure whether it could be bigInt like you say or maybe just a difference in handling overall. Much appreciated, best wishes!
