The mystery winner of the $1.3 billion Powerball prize earlier this month has been revealed — and it's a heartwarming story.

Lucky ticket it is bought in Oregon by 46-year-old Cheng Saephan, an immigrant from Laos who has been battling cancer for eight years.

Saephan bought it ticket at a Plaid Pantry store in Portland for the April 6 drawing. Plaid Pantry will also receive a $100,000 bonus for selling the winning ticket.

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Saephan chose to take his winnings as a lump sum payment, which will equal $422 million after taxes. It will be split between him (he will get 50%), his wife, Duanpen, and his friend, Laiza, who gave him $100 to buy the tickets.

The lucky winner told local media coin 6 when he found out that he had won, he called Laiza and said: “You don't have to work anymore”.

“I'm grateful for the lottery and how I've been blessed,” Saephan told the paper. “I am able to provide for my family and my health.”

Saephan, who had his most recent chemotherapy treatment just last week, said he plans to use the funds to find a “good doctor” to help him with the rest of his treatment.

“I'm in the middle of fighting cancer, so I was thinking, 'How am I going to have time to spend all this money?'” Saephan joked. “I might get lucky again. I'll keep playing.”

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Saephan's jackpot is the fourth largest in US history. The biggest was a California winning ticket that won $2.04 billion in 2022.

However, this is the largest prize ever won in Oregon, beating the record of a Powerball win in 2005 for $340 million.