noun
winning number; lucky number
Refers to the number that wins a lottery, raffle, or similar draw. 'Lucky number' is a looser translation; the core meaning is the drawn winning number.
宝くじの当選番号が発表された。
The winning numbers for the lottery were announced.
当選番号を確認してください。
Please check the winning number.
Compound of 当選 (winning, being elected) and 番号 (number).