The man said he didn't remember checking the ticket, so he decided to give it another check and discovered it matched all five numbers from the Oct. 13 drawing, 6-9-33-35-37.
The winner said the ticket was among a stack of losers in a plastic bag in his truck.
"I still don't believe it," he said.
The man said he started storing the tickets in his truck because he was afraid his wife would be the one to throw out a winner.
"I used to keep my tickets on the dresser," he said. "But when my wife would clean, she'd throw them away."