Write your full name and signature on the back of the winning ticket.
"It's only occurred a handful of other instances, so this is really, actually uncommon," said Florida Lottery spokeswoman Amy Bisceglia.
Tickets to play the Powerball cost $2 and are out there in 45 states, the District of Columbia, Puerto Rico and the U.S.
"I'm certain I could figure out how to live with $731 million, but $2 million is superior, also."
To claim jackpot prizes, the winners will have options, they can either pick their prize as an annuity or a lump-sum payment.