The winners of the Aug. 7 Powerball jackpot pose with a check for their share of the $448 million grand prize. Sam Fromkin/New Jersey Lottery hide caption

itoggle caption Sam Fromkin/New Jersey Lottery

Powerball winner Gloria C. Mackenzie, 84, leaves the lottery office escorted by her son Scott (right) after claiming a single lump-sum payment of just over $370 million before taxes on Wednesday in Tallahassee, Fla. Officials say she is the largest sole lottery winner in U.S. history. Steve Cannon/AP hide caption

itoggle caption Steve Cannon/AP

A Powerball lottery ticket sits in the machine at the 4 Sons Food Store and Chevron gas station which sold one of two winning Powerball lottery tickets in Fountain Hills, Ariz. Joshua Lott /Reuters /Landov hide caption

itoggle caption Joshua Lott /Reuters /Landov