A lucky ticket holder in Tennessee woke up with a $2 million winning Powerball ticket. The jackpot is growing and still up for grabs though. Here's what to know.

The Powerball jackpot has grown to $643 million -- with a cash payout of $290.6 million -- after no one won Monday night's drawing. A total that was already the highest of the year has now crept higher. The next drawing will take place Wednesday night.