On May 18, 2013, the world's largest one-ticket jackpot, an annuity of approximately $590.5 million ($620 million today), was won by a Powerball ticket sold in Zephyrhills, Florida.[33] On June 5, Florida Lottery officials announced the winner: Gloria C. MacKenzie, 84, who purchased the "quick pick" ticket at a Publix supermarket.[34] MacKenzie chose the cash option of approximately $370.8 million, before Federal withholding; Florida does not have a state income tax.[34]
And of course, if non-US residents are eligible to buy the tickets, they are also eligible to claim the prize money should they win. However, be aware that the rules covering taxes and withholding vary depending on where you live. Countries outside of the United States might have different procedures. If you do win, be sure to consult with a tax professional for more information.
Mega Millions players have the option to activate a multiplier, called Megaplier, in 45 of its 46 jurisdictions; it is functionally similar to Powerball's Power Play; except the latter cannot multiply second prize by 5. (Neither Megaplier nor Power Play are offered in California because its state penal code distinguishes between a "lottery" in which the bank cannot be "broken", and a "banked game" whose bank theoretically could be broken; only a "lottery" was authorized by the state Lottery Act.) By adding $1 to a basic Mega Millions game, to $3, a player has an opportunity to multiply any non-jackpot prize by 2, 3, 4, or 5. The Megaplier is drawn by the Texas Lottery (before the cross-sell expansion on January 31, 2010, it was the only lottery to offer Megaplier), which is drawn by a random number generator (RNG). The odds for each Megaplier possibility are not uniform.[19]
*a tip to know whether the website you are looking at actually buys lottery tickets online or follows the insurance model is to check the wording that they use. If you see the words “Play” then you can be confident it is a company that has agents and buys your tickets physically, if you see the words “Bet” you can be sure it is following the insurance model and you are placing a bet on the outcome of a lottery.

A Powerball jackpot winner may choose to receive their prize in 30 payments over 29 years or a lump-sum payment. The cash value option, in general, is the amount of money required to be in the jackpot prize pool, on the day of the drawing, to fund the estimated jackpot annuity prize. The advertised jackpot annuity and cash value are estimates until ticket sales are final, and for the annuity, until the Multi-State Lottery Association takes bids on the purchase of securities. 
Ohio and New York joined The Big Game consortium on May 15, 2002, when the game was renamed The Big Game Mega Millions, temporarily retaining the old name and the original "gold ball" logo. The "Big Money Ball" became the "Mega Ball." While the game's name was altered, the yellow ball in the new Mega Millions logo continued to read "The Big Game" until February 2003, after which it was replaced with six stars representing the original members of the consortium. The first (The Big Game) Mega Millions drawing was held two days later, on May 17. The Mega Millions trademark is owned by the Illinois Lottery. The first three lotteries to join Mega Millions were Washington (in September 2002), Texas (in 2003) and California (in 2005); California was the last addition to Mega Millions before the cross-sell expansion of 2010. Montana joined Mega Millions on March 1, 2010, the first addition to Mega Millions after the cross-sell expansion.
The probability and odds can be taken into a mathematical perspective: The probability of winning the jackpot (through October 27, 2017) was 1:(75C5) x (15); that is: 75 ways for the first white ball times 74 ways for the second times 73 for the third times 72 for the fourth times 71 for the last white ball divided by 5 x 4 x 3 x 2 x 1, or 5!, and this number is then multiplied by 15 (15 possible numbers for the "Megaball"). Therefore, (75 x 74 x 73 x 72 x 71)/ (5 x 4 x 3 x 2 x 1) x 15 = 258,890,850, which means any combination of five white balls plus the Megaball has a 1:258,890,850 chance of winning the jackpot. Similarly, the odds for second prize are 1:(75C5) x (15/14) = 1: 18,492,204 chance of winning. The overall probability of winning any prize was 1 in 14.7. If there are no jackpot winners for a specific drawing, the jackpot will keep increasing, however, the odds will still remain the same.
Two machines are used in each Mega Millions drawing. The model used for Mega Millions is the Criterion II, manufactured by Smartplay International of Edgewater Park, New Jersey. The balls are moved around by means of counter-rotating arms which randomly mix the balls. Individually, the five white balls, several seconds apart, drop through a hole in the bottom of the mixing drum.
Changes to the Mega Millions game matrix were introduced, meaning the jackpots will likely get bigger more often, and players have a better chance of winning the second-tier prize of $1 million (without the Megaplier). Certain states can now take advantage of the Just the Jackpot feature, which allows players to buy a ticket ($3 for two lines) that gives them a chance of winning the jackpot if they match 5 + 1, but no prizes if they match anything less than that.
Powerball is an American lottery game offered by 44 states, the District of Columbia, Puerto Rico and the US Virgin Islands. It is coordinated by the Multi-State Lottery Association (MUSL), a nonprofit organization formed by an agreement with US lotteries. Powerball's minimum advertised jackpot is $40 million (annuity); Powerball's annuity is paid in 30 graduated installments or winners may choose a lump sum payment instead. One lump sum payment will be less than the total of the 30 annual payments because of the time value of money.
Jump up ^ Lotto, Lucy (June 30, 2011). "Powerball Lottery Changes for 2012". WorldLottery.net. Archived from the original on August 23, 2013. Retrieved September 4, 2013. The first and biggest change to the Powerball Lottery is the introduction of the $40 million base jackpot. Now, when the Powerball Lottery jackpot is reset after a win it will start at $40 million, tempting even more players in for those early draws. Another promise, that is sure to be popular with lottery players, is the introduction of more prizes. From January, Powerball players will have even better odds of winning a prize worth at least $1 million, and it’s that fact that may soften the third and biggest ever change. From January 15, 2012, Powerball Lottery tickets are doubling in price, in what is the biggest change to the Powerball Lottery draw since its launch in 1994.
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.
Hot numbers are the lottery numbers that appear the most, and US Powerball's all-time hot numbers are 26, 16, 41, 32, and 28. Cold numbers are the numbers that appear infrequently. Some lotto fans choose them specifically because of this, believing that their reappearance in US Powerball results is only a matter of time, while others stay clear. The US Powerball lottery all-time cold numbers are 60, 65, 67, 68, and 66. We update Powerball’s hot and cold numbers listings every year to help you make your number selection.
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Assuming that you have chosen an online lottery company that physically purchases tickets online. How you play Powerball online is the following; Firstly, pick whether you want to buy group Powerball tickets online or single tickets. Almost all online lottery ticket providers offer the player to buy group tickets in addition to single ticket purchases. An online group game ticket in the Powerball is the same concept as a work syndication for the lottery, only nowadays thanks to the wonders of the internet, you don’t have to rely on the people in your vicinity – you can join a syndicate that is made up of hundreds, if not thousands of people scattered all across the globe. 
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