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.
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.
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]
Remember, the advertised Mega Millions jackpot is the annuity jackpot, which means it's the amount that you would receive if you were to opt for the money to be paid out over 29 annual payments (plus a one-off initial payment). For example, for an advertised jackpot of $200 million, the initial payment would be approximately $3 million, with future payments growing to as much as $12.4 million per annum. However, almost all jackpot winners take the cash option that is paid in one lump sum that, on average, is 60% of the advertised jackpot.
The US Powerball is a standard lottery draw game based and operated from the golden State of California. The US Powerball has been making millionaires and multi-millionaires since its first drawing way back in 1992. With over 25 years of experience in the lottery industry, the Powerball, along with many other State lotteries, has broken through the final glass ceiling and transformed itself from an interstate lottery into a truly international lottery of global reach. 
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