Since the secondary prizes are defined in fixed amounts (except in California), if the liability for a given prize level exceed the funds in the prize pool for that level the amount of the prize may be reduced and the prize pool be distributed on a parimutuel basis and result in a prize lower than the fixed amounts given in the prize tables. Because the secondary prize pools are calculated independently, it is possible lower-tier prizes will differ among the game members.
Before the agreement, the only places that sold both Mega Millions and Powerball tickets were retailers straddling a border; one retailer on the Sharon, Pennsylvania/Masury, Ohio border sold both Mega Millions (via the Ohio Lottery) and Powerball (Pennsylvania) before the agreement and continued to be the only retailer to sell tickets for both lotteries.
The largest jackpot in Mega Millions history was $656 million annuity value (with a cash option of $474 million) for the March 30, 2012 drawing, in which there were three jackpot-winning tickets; one each in Illinois, Kansas, and Maryland. All three tickets had been claimed by April 18, with each set of winners choosing the cash option of $158 million.
The structure of the draw is one which regular lottery players will be very familiar with; players must pick 5 regular numbers from a pool with a total of 69 numbers and in addition to these regular number picks, you also choose one bonus ball (known as the Powerball) from a pool of 26. These two pools of numbers are mutually exclusive and remain completely separate throughout the drawing procedure. In order to jackpot the US Powerball, you need to match all 5 regular numbers and the Powerball. Do this and you are instant Powerball millionaire – it’s as simple as that!