Idaho Lottery officials say one ticket marched the first five numbers and the Wild Card from Saturday's drawing.
Wednesday's estimate jackpot is $200,000. Wild Card is played in Idaho, Montana, North Dakota and South Dakota.
On Monday, Idaho Lottery officials said Robert Hibberd bought his winning ticket at Greenhurst Chevron in Nampa.
"I knew it had to be a lot, but I didn't know how much it was," explained Hibberd. "I finally looked at the numbers and saw I had the big winner. I started calling people!"