id# is in the 200000s ? Are these allocated sequentially and contiguously ? If so, M:tG _really_ got away from me since I stopped paying attention to it.
I don't think they are allocated sequentially (and there aren't that many unique cards/versions). But IIRC Gatherer's using the IDs from the internal "Multiverse" DB, which also includes all the brainstormed card ideas that never made it into an actually-released set, which would tend to inflate the numbers.
Edit: and they are not allocated sequentially. These two cards have only ever appeared in the 2014 core set, and have sequential collector numbers in the set but not sequential IDs:
