The Powerball jackpot keeps climbing, and the lottery is now on the verge of handing out one of the biggest jackpots in US history.

The Powerball jackpot is now at a whopping $750 million for the March 27 drawing after no one managed to pick all of the winning numbers to win the more than $600 million prize on Saturday. The pot has been growing since the last time someone bought a winning Powerball ticket in December 2018.

If some lucky lotto player does select all of the winning numbers for Wednesday's Powerball drawing, the $750 million jackpot would be the fourth-largest US lottery prize in history. But, that jackpot would still be about half the sizeof the all-time record for a US lottery drawing, which came in January 2016. That Powerball drawing awarded $1.59 billion, while a close runner-up was the $1.54 billion Mega Millions prize handed out in October.

The odds of actually winning the top Powerball prize this week are roughly one in 292 million, according to Powerball.

Lottery winners choose between receiving their winnings in an annuity — with payments over 30 years — or the more popular option, a single lump sum payment in a smaller amount (that's the option Kevin O'Leary says you should choose). The lump sum on Wednesday's Powerball drawing is $465.5 million.

Here is a look at the top lottery prizes ever won (so far).

1. $1.586 billion (Powerball)

This Powerball drawing from Jan. 13, 2016, for which three winning tickets were sold, remains history's biggest lottery prize.

The winners — John and Lisa Robinson in Tennessee, Maureen Smith and David Kaltschmidt in Florida and Marvin and Mae Acosta in California — split the full prize, giving them the option of roughly $533 million before taxes as an annuity or $327.8 million as the lump-sum payment.

The Robinsons' winning ticket was one of four they bought at a grocery store, they told NBC's TODAY show. They opted to take the lump sum. "We're not guaranteed tomorrow," says John.

Florida-based Smith and Kaltschmidt also picked the lump sum. At the time they planned to get massages, upgrade their truck and retire with the newfound wealth, according to NBC.

The Acostas remained anonymous for months after winning, but released a statement saying they were thankful for the "rare gift that has been placed in our care."

2. $1.537 billion (Mega Millions)
The winner of last year's huge drawing took their time to come forward. The anonymous winner (South Carolina is one of a handful of states that allows lottery winners to claim their prize anonymously) finally claimed their winnings earlier this month, a little more than a month ahead of the April 19 deadline to come forward.

What we do know is that the winner chose the cash option for their prize, which resulted in a one-time payment of almost $878 million. While it's not the largest-ever jackpot, that number does represent the biggest payout to a single lottery winner in US history.

Based on the expected tax bill, the total haul from that jackpot will be about $491.7 million, after both federal and state taxes (a 7 percent income tax in South Carolina, plus the 37 percent federal rate), while other taxes may also apply.

3. $758.7 million (Powerball)

Mavis L. Wanczyk of Chicopee, Massachusetts, claimed the winning ticket for the $758.7 million Powerball jackpot in August of 2017, taking $480.5 million before taxes as the lump sum payment. One of the first things Wanczyk did after winning was to tell her employer, Mercy Medical Center, that she was quitting after working there for 32 years.

"I've called them and told them I will not be coming back," she told NBC.

4. $687.8 million (Powerball)
Another big winner in 2018 came less than a week after the $1.54 billion Mega Millions jackpot. This one was less than half the size of its predecessor, but it still represented a major windfall for a pair of winners in Iowa and New York in October 2018.

In Iowa, the winner was a 51-year-old grandmother named Lerynne West who chose a lump-sum payment of roughly $198 million. West, who nearly lost her winning ticket, later appeared on TV with Ellen DeGeneres and announced that she would donate $500,000 to the veterans non-profit The Travis Mills Foundation.

The winner from New York was Robert Bailey, a 67-year-old retired postal worker who bought his winning ticket in Harlem using the same combination of lottery numbers he said he'd played every week for roughly 25 years. He also took the lump-sum payment.

5. $656 million (Mega Millions)
Mega Millions also sold three winning tickets in March 2012 for this massive jackpot.

Illinois winners Merle and Patricia Butler claimed $218.6 million of the winnings. And, in Maryland, where lottery winners are allowed to remain anonymous, three school employees claimed their share under the name "The Three Amigos."

The third winner in Kansas remains anonymous.