Sunday's Chinese Grand Prix will be the 1,000th race of the Formula One world championship since the first at Silverstone in 1950. The following are some of the main numbers:
0.5 - Points scored by women drivers in Formula One history. Only two women have started a race, both Italian -- Maria Teresa de Filippis and Lella Lombardi. Lombardi finished sixth in Spain in 1975, with half points awarded after the race was cut short due to a fatal accident.
1 - One posthumous champion, Austrian Jochen Rindt who died during practice for Lotus at Monza in 1970. His widow Nina collected the trophy.
7 - The most championships won by a driver, with Germany's Michael Schumacher taking his seventh in 2004 with Ferrari.
10 - British champions, a record for any country. Brazil, Germany and Finland each have three. 19 Britons have won races.
15/16 - Ferrari have won 15 drivers' championships, more than any other team. They have also won 16 constructors' titles, another record, and six were consecutive between 1999 and 2004.
17/18 - Dutch driver Max Verstappen was 17 when he became the youngest F1 driver with Toro Rosso. He was the youngest race winner at 18, with Red Bull, at the 2016 Spanish GP.
21 - Countries to have had a race winning driver.
29 - Titles decided in the last race of the season. Most recently in 2016, when Germany's Nico Rosberg took the title for Mercedes in Abu Dhabi.
33 - The number of world champions, from Giuseppe Farina to Hamilton. There are 20 still living, with Jackie Stewart (1969, 1971 and 1973) the longest standing.
34 - Constructors to have won races. The top four (Ferrari, McLaren, Williams and Mercedes) have won 620 of 999 so far.
46 - Oldest world champion. Argentina's Juan Manuel Fangio in 1957 was 46 years and 41 days when he won his fifth title.
53 - The oldest race winner, at 53, was Italian Luigi Fagioli who was born in 1898 and contested seven championship races in 1950 and 1951. He won in France in 1951 and died in 1952 during Monaco GP practice.
55 - Monaco's Louis Chiron remains the oldest driver to start a race, in his home Grand Orix in 1955.
61 - The number of constructors' championships so far. Since Vanwall won the first in 1958, 15 teams have been champions.
71 - The number of tracks to have hosted a race. A total of 32 nations, not including Luxembourg and San Marino whose names were on grands prix held in Germany and Italy respectively, have held F1 races.
83 - Ferrari have had a record 83 one-two finishes over the years, with McLaren next on 47. Mercedes have 46.
84 - No driver has had more pole positions than Lewis Hamilton, who took his 84th in Australia in March.
91 - Most races won by a driver, set by Schumacher whose last was in China in 2006 with Ferrari (his 72nd for the team).
99 - Since 1950, 99 drivers have started a race on pole position. Leclerc, in Bahrain last month, was the 99th in the 999th race.
107 - Formula One race winners, including Indianapolis 500 between 1950 and 1960.
155 - Most podium appearances by a driver, Schumacher again.
163 - British drivers, more than any other country.
220 - Poles for Ferrari, a record. McLaren are next on 155.
235 - Wins for Ferrari, the oldest team in the sport and only ones to have raced in every season. McLaren are on 182.
323 - Brazilian Rubens Barrichello, Schumacher's team mate at Ferrari, started more races than any driver.
752 - Podium finishes for Ferrari, another record.
764 - Drivers to have started an F1 race.
974 - Races participated in by Ferrari (972 starts).