"We've had reports of lines outside newsagents when they opened about 6am," she said. "And people are jumping online to see if they might be the one."
"We've had jackpots higher than $70 million before, but we've never had one of those go to a single entry," the spokeswoman said.
"The odds are incredible. We would have seen about one third of the adult population buy an entry."
As the wait for the winner continues, OzLotto says the winner could still claim the prize even if the ticket ended up in the wash or the bin.
"If an unregistered ticket is damaged or destroyed, there's still a way to claim the prize. It just takes longer. We have to investigate to see if the winner can say where and when they purchased the ticket, that sort of thing."
- AAP