The combined Powerball, Mega Millions jackpots now surpass $1 billion.
The Powerball jackpot is $570 million, and the Mega Millions stands at $450 million. Both games had their most recent jackpot wins in late October.
The next Mega Millions drawing is scheduled for 11 p.m. ET on Friday, and the next Powerball drawing is Saturday at 10:59 p.m. ET.
This is the first time U.S. lottery players have had two opportunities to try for prizes exceeding $400 million, and the second time both have simultaneously topped $300 million.