Nyck de Vries will compete in Formula 1 under race number 21, confirmed on Thursday.
De Vries is one of the three drivers that will make their full-time F1 debut next year. Since 2014, all F1 drivers use their personal race numbers.
According to the 2023 F1 season entry list that was published earlier on Thursday, the Dutchman picked 21 as his race number.
The number was previously used by Esteban Gutierrez in 2016 which meant that it was available for de Vries.
Fellow rookies Oscar Piastri and Logan Sargeant will compete under race numbers 81 and 02 respectively.