The final 5/56 + 1/46 Mega Millions drawing was held on October 18, 2013; that night's jackpot of $37 million was not won. The first drawing under the revised 5/75 + 1/15 format—which saw the jackpot estimate "leap" to $55 million due to the change in the annuity structure—occurred on October 22, 2013. The minimum jackpot was then $15 million, with rollovers of at least $5 million. Second prize (5+0) became $1 million cash. In the revised format, players chose 5 of 75 white ball numbers, and the "Gold Ball" number out of 15.

Mega Millions is played in 44 states — but not Alabama, Alaska, Hawaii, Mississippi, Nevada and Utah — the District of Columbia and the U.S. Virgin Islands. The most recent Mega Millions grand prize, a $142 million jackpot, was won May 4 in the Dayton, Ohio, suburb of Moraine; the winner claimed the prize anonymously through a trust, netting a $60.5 million lump sum after taxes. 

^ Jump up to: a b Prizes are uniform in all Mega Millions jurisdictions, with the exception of California (where all prizes, including the jackpot, are pari-mutuel; payouts are based on sales and the number of winners of each prize tier.) All other Mega Millions members' second through ninth prizes are set amounts, although in rare cases they can be reduced.
Choose five numbers from between 1 and 69. Like nearly all lotteries, none of these five numbers can be the same and the order doesn't matter. You'll also choose a Powerball number between 1 and 26. We recommend you spend a little more and take the Power Play option; we explain why in more detail below. Once you’ve bought a ticket, you’re going to have to wait for the drawings to take place on Wednesdays and Saturdays at 10:59 p.m. (EST). It’s that simple and will take you one step closer to hunting down that big win.
The American Powerball lottery makes use of two machines drawing two sets of numbers. In this way, it is similar to other lotteries like the Mega Millions and EuroMillions. Powerball players need to match five numbers from a possible 69 (these are the white numbers), and one number from a possible 26 (these are the red bonus ‘Powerballs’). If a player matches up all six numbers that have been drawn, they will win the jackpot. Second tier division winners have a $1 million prize to look forward to – one does not even need to match all six numbers in order to become a millionaire with the US Powerball game!
Powerball offers an optional multiplier known as the Power Play, which multiplies the seven bottom prize divisions by 2, 3, 4, 5 or 10 times, depending on the draw and jackpot size. Matching five main numbers and the Power Play still makes you a multi-millionaire by doubling Powerball’s second place prize to a staggering $2,000,000! To add the multiplier, simply check the Power Play box when you buy your Powerball tickets online.

In the United States, lotteries are run by 47 jurisdictions: 44 states plus the District of Columbia, Puerto Rico, and the U.S. Virgin Islands. Lotteries are subject to the laws of and operated independently by each jurisdiction, and there is no national lottery organization. However, consortiums of state lotteries jointly organize games spanning larger geographical footprints, which in turn, carry larger jackpots. Two major lottery games, Mega Millions and Powerball, are both offered in nearly all jurisdictions that operate lotteries, and serve as de facto national lotteries.
First introduced in 1996, the USA Mega Millions was originally known as ‘The Big Game’ - and looking at its payouts over the years, it’s no surprise as to why. With a starting jackpot of $40 million and a record jackpot of $656 million to date, winning the USA Mega Millions is no joke - although when you hit the big one you’ll be laughing all the way to the bank.
This method specifically has faced criticism recently from a number of lottery organizers such as Camelot, the UK National Lottery organizers who are not happy with companies “selling tickets” (selling bets on outcomes of their established lottery draws) for prices sometimes even cheaper than Camelot themselves sells their tickets. This legal and corporate dispute looks set to continue for the foreseeable future, in the mean time you can continue to buy Powerball tickets online, only now you are aware of the key differences between the two business models. 
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