Powerball and Mega Millions now closing in on a combined $1.3 billion in prize money this week.
With nobody matching all six winning numbers Wednesday, lottery officials say the jackpot now exceeds $640 million dollars.
That amount is expected to grow even larger ahead of the next drawing Saturday night.
Meanwhile, the Mega Millions jackpot now exceeds $750 million.
The next set of numbers from Mega Millions will be drawn just after 10:00 PM Friday night.