I think Pokerstars is wrong on these odds.. Check it out!

[AaronBrown]

If you pick one card from the deck, the odds are 1.6 to 1 against it being part of a royal flush. So the odds of flopping a royal flush are 12 to 1, 5*(1.6+1) - 1. Boy, am I going to get rich playing Poker. I'll just fold 12 hands and clean up with my royal flush on the 13th.