Fait mathématique: 27609 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Culture générale: 27609 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: August 3rd is the day in 1811 that First ascent of Jungfrau, third highest summit in the Bernese Alps by brothers Johann Rudolf and Hieronymus Meyer.