There is no mystery why the Mega Millions jackpot has grown to $1.55 billion, making it the third-largest ever. The prize is growing so large because no one has matched the game’s six numbers to win the jackpot since April 18. That's 31 straight drawings without a big winner. That nearly four-month-long unlucky streak could be all the sweeter for the person who finally wins. The current prize is inching toward the record lottery jackpot of $2.04 billion, which was won in 2022 by a player in California. The next drawing is Tuesday night. The odds of winning the jackpot are 1 in 302.6 million.