Both the Mega Millions and Powerball lottery draws are offering huge rollover jackpots this weekend.

TonightÂ's Mega Millions jackpot has risen to an estimated $77m after no tickets matched all five main numbers and the Mega Ball to claim the top prize in the most recent draw.

The winning numbers for the last draw were 4-7-30-36-38 with a Mega Ball of 38.

Mega Millions tickets cost $1, with players picking five numbers between 1 and 56 alongside one number between 1 and 46.

Meanwhile SaturdayÂ's Powerball jackpot is an estimated $142m after no-one matched the five main numbers and additional Powerball in the previous draw on Wednesday.

The winning numbers for that draw were 6-7-9-19-32 with a Powerball of 13.

Powerball tickets cost $2 each, although players can purchase a $1 Power Play feature to multiply any non-jackpot winnings.