$1.6bn Powerball jackpot is the largest lottery prize in history

The drawing will be held on Saturday night for the prize, which hasn't been won in three months

Strong sales boosted a Powerball jackpot to an estimated $1.6bn on Friday, making it the largest lottery prize in history.

A drawing will be held on Saturday night for the Powerball prize, which hasn't been won in more than three months. That string of 39 consecutive drawings without a winner is a reflection of the tough odds of winning a jackpot, at 1 in 292.2m.