That was enough for Drew Gentsch to play one ticket Monday morning. The attorney from Des Moines never plays, but the jackpot was too good to pass up.
"I think it's ridiculous but you have to dream big," he said. "The odds of winning are so low, there's no real reason to play. But it's fun to do so once in a while."
Between 65 and 75 percent of the roughly 259 million possible number combinations will be in play when the numbers are drawn, Otto estimated. She said the jackpot may be increased one more time on Tuesday morning in advance of the evening drawing.
"Lotto players are procrastinators. They tend to buy on the day of the draw," she said.
No ticket matched the six numbers needed to win Friday's $425 million prize. The jackpot was raised Saturday to $550 million before Monday's jump to $586 million. It is currently the fourth-largest jackpot in U.S. history.
Some players were taken aback by the growing jackpot and the possibility that it could keep getting bigger.
Natali Justiniano Pahl, 47, bought five tickets from a convenience store in downtown Des Moines. She said the growing jackpot made her excited, albeit somewhat weary.
"It gets the excitement up, but there's a point when it's too much," said Justiniano Pahl, who works in human resources. "$5 million would be good; $550 million would be good. Either one would change your life."
Associated Press writer David Pitt contributed to this report from Des Moines.