This is a ridiculous thread. In United's world, 1K = 100K, there's no difference.

I don't have a ticket stub in front of me, but I thought it actually said "Premier Exec 100K". Or is that on the big part of the boarding pass, can't remember... I can't believe I can't remember this, I've seen the BP like 1,000 (or 1K) times.

In any case, it gets even stranger. Online, your status is listed as 100K Premier on the Mileage summary. On the inflight manifest, we're listed as "100K flyer", unless we're also Million milers, in which case, it's "1K Million". "1K" is used for the two-digit status code (like 1P or 2P) in certain systems, and when you call in to make reservations, you're calling the "1K" desk.