Big numbers in LUA

I’ve recently been trying to convert a SteamID into a SteamID64.
The formula for this is:

V = 0x0110000100000000(hex)
or 76561197960265728 in dezimal


But if I print the steamid64, or any big number really garrys mod just prints(just an example): 765611979602+e015

I need to make the calculation and then turn the number into a string but I can’t find away around that.

Oh damn, I completely did not find that…
Thanks a ton!