A Sydney mum in her 40s is $107 million dollars richer after scooping up the largest individual prize ever in Australian lotteries.

The healthcare worker maintains she will not be quitting her job after matching all seven numbers drawn on Thursday night to win the mammoth Powerball jackpot.

Originally set at $100 million, the division one prize leapt to more than $107 million due to the number of entries bought.

When the Lott phoned the woman to inform her of her life-changing win, she was in disbelief.

“I don’t believe it! I don’t believe it! Is this a trick?”

The woman, who wishes to remain anonymous, said she had “such a tumultuous day” that she did not know where she was or what she was doing at the time of the call.

She was originally under the impression that she had won just $107,000, the Lott said.

“Wait – are you telling me I’ve won $107 million!? Oh my God! That is just so much money!” she said.

The woman, who bought the entry at random the day before the draw, said she would not retire and would share her winnings with her family and her favourite charity.

“I’m not quite sure what to do but of course I will be helping my family.

“I’ll be giving my favourite charity some money! They’ll get a whole slab of money!

She said the win will drive her to undertake “more health work for causes important to me”, adding that she is not planning to retire anytime soon because of the passion she has for her job.

“All the win gives me is the chance to go and do the things I’ve always want to do.

“We might buy a caravan and travel around too,” the woman added.

According to the Lott, Thursday’s draw also saw a total of 3,856,275 prizes worth more than $68.4 million won in divisions two to nine.

This included 20 division two winning entries, that each took home a division two prize of $94,792.90.

-with AAP