In California, prize levels are paid on a parimutuel basis, rather than the fixed lower-tier amounts for winners in other Mega Millions jurisdictions. California's eight lower-tier Mega Millions prize pools are separate from those shared by the other 45 lotteries. California's second prize is a "secondary jackpot"; its payout sometimes exceeds $1 million cash, even though California does not offer the Megaplier.
The Mega Millions world record stood until January 2016, when Powerball took over the crown as the lottery champion of the world with a $1.568 billion jackpot. Changes to the Mega Millions game format have made it more difficult to win the Mega Millions jackpot and as a result, Mega Millions could soon award a record-breaking jackpot and regain its title as the biggest lottery in the world.
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.
Powerball® tickets print the white ball numbers in numerical order of a given play. You can match the white ball numbers in any order of a given play to win a prize. The red Powerball number of a given play on your ticket must match the red Powerball drawn. Each play on a ticket is separately determined; players cannot crisscross play lines on a ticket or combine numbers from other tickets.
Mega Millions' second-largest jackpot, $648 million, was for the December 17, 2013 drawing. Two winning tickets, one each from California and Georgia, were sold. The holder of the Georgia ticket claimed the next morning; they selected the cash option, which amounted to $173,819,742.50 before withholdings. The holder of the California ticket claimed on January 3, 2014. (The California ticket holder received an equal share, but potentially a larger cash-option amount, as California lottery winnings are exempt from state income tax)." 
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!