SAN FRANCISCO (KRON) – The Powerball jackpot keeps climbing and hit $1.5 billion Tuesday morning.

The $1.5 billion jackpot is the biggest jackpot prize in the history of the world.

No one matched all six Powerball numbers Saturday night, leading to the astronomical prize. And that is all but certain to grow before the next drawing Wednesday, according to lottery officials.

The odds to win are one in 292.2 million. Seventy-five percent of all the possible combinations were purchased before Saturday’s drawing, Grief said, and he expects that enough tickets will be sold to cover about 80 percent by Wednesday. About 95 percent of Powerball tickets have computer-generated numbers.