Fait général: 1729 is the smallest number representable in two different ways as a sum of two positive cubes, as Ramanujan stated on the spot.
Fait mathématique: 1729 is the smallest natural number representable in two different ways as a sum of two positive cubes, as Ramanujan stated on the spot.
Culture générale: 1729 is the smallest number representable in two different ways as a sum of two positive cubes, as Ramanujan stated on the spot.
Date historique: September 24th is the day in 1852 that the first airship powered by (a steam) engine, created by Henri Giffard, travels 17 miles (27 km) from Paris to Trappes.