December 17, 2013 at 10:42 PM CST - Updated July 27 at 9:20 AM
The Mega Millions estimated jackpot has risen to nearly $640-million making it the second largest jackpot in U.S. history.
Mega Millions changed its rules in October to help increase the jackpots by lowering the odds of winning the top prize to about 1 in 259 million.Local store clerks are defiantly selling more tickets than usual.
Mega Million is played in 43 states.Profits from the sale remain in the state and go to the Lottery’s Beneficiary.
In Texas, it's the Foundation School Fund, which supports Texas Education.