how long are mega millions tickets good for
Mega Millions Mega Millions winners have either 180 days (California non-jackpot prizes only) or one year to claim prizes, including the jackpot (although some Mega Millions winners lose the right to collect a jackpot in cash if they wait more than 60 days after the drawing).
National Lottery (United Kingdom) From 10 October 2015, Camelot announced further changes to the Lotto game which increased the pool of numbers from 49 to 59. Rollovers are no longer limited in number, instead the size of the jackpot is capped; the cap is reached after about 14 rollovers. When the jackpot gets to £50 million, if no-one matches all six main numbers the jackpot will rollover to the following draw. In the event nobody matches all six numbers on that draw the jackpot "rolls down" and is combined with the prize fund for the next prize category where there is at least one winner. Since August 2016, if nobody wins the jackpot when it is £22 million or more, it will roll to the next draw one final time. Then, the jackpot must be won: if no-one matches all six main numbers, the prize will be shared by the players with the most winning numbers.