The Powerball jackpot has grown to an estimated $1.5 billion for Saturday night’s drawing after lottery officials said no ticket matched all six numbers drawn Wednesday night. The U.S. has seen more than a dozen lottery jackpot prizes exceed $1 billion since 2016.

After no ticket matched all six numbers drawn in Wednesday night’s Powerball jackpot drawing, the prize has now grown to an estimated $1.5 billion.

You have a 1 in 292.2 million chance of winning the Powerball jackpot. If you overcame those odds and now have a jackpot-winning ticket, experts say you should immediately do two things: sign the back of the ticket, to ensure only you can claim it, and keep your victory a secret for as long as possible.

But even if you’re not a big lottery winner in Monday’s Powerball drawing, it’s still worth heeding this advice for managing a significant sum of money