Hecho general: 243 is the number of Earth Days for the planet Venus to complete one Venetian day, one revolution.
Hecho matemático: 243 is the sum of five consecutive prime numbers (41 + 43 + 47 + 53 + 59).
Trivia: 243 is the Calling code for Zaire.
Fecha histórica: August 30th is the day in 1967 that Thurgood Marshall is confirmed as the first African American Justice of the Supreme Court of the United States.