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An Adelaide man has claimed the $150 million Powerball division one prize, becoming Australia's biggest lottery winner.
The only division one winning ticket was purchased from an OTR service station in Salisbury in Adelaide's north.
"I know it may sound crazy but I'm going to continue working," the middle-aged man said.
The man said he had two tickets in the draw, checked them last night and realised he'd won.
"I'm at work today."
He said he'd never "screamed so loud or jumped so high".
"I'll buy a house, want to travel the world and I've got a family and friends I want to help, but for now I can't wrap my head around how big this prize is.
"This is life-changing. I can't stop smiling and pinching myself."
The winning numbers were 18, 29, 34, 8, 4, 28 and 6 with a Powerball of 11.
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Earlier The Lott said a single person bought the ticket but didn't register it to a player card or online account so officials were left with no option but to wait for them to come forward.
The $150 million prize is tied for the third biggest prize ever offered by the lottery game but all the more lucrative draws were won by multiple winners or syndicates.
Officials earlier said up to half of Australian adults were expected to buy a ticket as the division one prize surged on the back of six draws in a row without winners.
The Lott spokesperson Matt Hart said there had only ever been five draws offering a jackpot of $150 million or more.
"If just one person takes home this $150 million prize on Thursday night, they'll make history by becoming the nation's biggest-ever individual lottery winner," he said, before the draw.
"The last time Powerball offered a $150 million prize was in January this year when the peak of sales was at 6.15pm on the day of the draw when 7455 tickets were sold in a single minute."
Winner of $750k jackpot bought a single $1 ticket
Statisticians say there is a greater chance of being hit by lightning than winning the massive prize but it's a chance millions were willing to take.
You can get immediate assistance by calling the National Gambling Helpline on 1800 858 858 for free, professional and confidential support 24 hours a day, 7 days a week.