For the year A.D. 33, see 33.


Thirty-three (33, XXXIII) is the natural number following thirty-two and preceeding thirty-four. Its divisors are 1, 3, 11 and 33; its factorisation is

Thirty-three is also:

  • The atomic number of arsenic.
  • In reference to vinyl records, 33 refers to a type of record by its revolution speed of 33 1/3 revolutions per minute. 33s are also known as long playing records, or LPss. See: 78 and 45.
  • A highly significant number to the Freemasons, and is one of their sacred numbers, recurring profusely throughout their 'Dogma' (as Albert Pike calls it), rituals and other miscellaneous places. Wherever you see a 33 in an inappropriate or peculiar place, chances are the Freemasons or related groups are responsible.
  • A song by the Smashing Pumpkins on their Mellon Collie and the Infinite Sadness album.
  • In Spanish, the "smile to the camera" word, as is "cheese" in English. Diga treinta y trés, is the same as "say cheese".
  • The code for international direct dial phone calls to France.


List of numbers

Thirty-one - Thirty-two - Thirty-three - Thirty-four - Thirty-five

Integer