The numbers in the Tuesday multi-state Mega Millions draw were 25, 35, 36, 47, 48 and the Mega number was 18.
The estimated jackpot was $19 million. If no tickets were sold with all six numbers, the jackpot for the next drawing, scheduled for Friday, would rise to $30 million, a California Lottery official said.
The drawing was the second since the last time a ticket with all six numbers was sold.
The odds of matching all five numbers and the Mega number is 1 in 175,711,536, according to the Mega Millions website.
The Mega Millions game is played in 41 states and the District of Columbia.