Fifteen Left


The smallest natural number with seven letters in its spelled name
  • a triangular number and a hexagonal number, a pentatope number, and the 4th Bell number
  • the atomic number of phosphorus
  • Passover begins on the 15th day of the Hebrew month of Nisan
  • In tennis, the number 15 represents the first point gained in a game
  • the age of a quinceañera, a Hispanic girl celebrating her fifteenth birthday
  • the number of days in each of the 24 cycles of the Chinese calendar.
  • The number of checkers each side has in the beginning of a backgammon games
  • The number of function keys on most Mac keyboards
  • The number to dial for SAMU in case of an emergency in France



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