There are 548 million reasons for you to buy a mega millions ticket tonight.

The mega millions jackpot is now the 9th largest in U.S. history at $548 million. The record hail for a mega millions prize is a $656 million jackpot shared by people in three states back in 2012.

If there is a winner tonight, the cash option payout is $309 million, minus taxes. Your odds of winning are one in 302.5 million.