83 (number)

83 (eighty-three) is the natural number following 82 and preceding 84.

In mathematics

83 is:

• the sum of three consecutive primes (23 + 29 + 31).
• the sum of five consecutive primes (11 + 13 + 17 + 19 + 23).
• the 23rd prime number, following 79 (of which it is also a cousin prime) and preceding 89.
• a
  Sophie Germain prime.^[1]
• a
  safe prime.^[2]
• a Chen prime.^[3]
• an
  Eisenstein prime
  with no imaginary part and real part of the form 3n − 1.
• a highly cototient number.^[4]
• the number of primes that are right-truncatable.^[5]
• a super-prime, because 23 is prime.

In science

Chemistry

• The atomic number of bismuth (Bi)

Astronomy

• Southern Pinwheel Galaxy
• The New General Catalogue object NGC 83, a magnitude 12.3 elliptical galaxy in the constellation Andromeda

In religion

Judaism

• When someone reaches 83 they may celebrate a
  second bar mitzvah

In music

• M83 is the debut album of the French electronic music group M83
• 83 is a song written by
  John Mayer in the Room for Squares
  album.
• 83 is a Quebec hip-hop group^[citation needed]
• 83 is a song produced by Maximono^{[citation needed]}

In film and television

• Gypsy 83 is 2001 film directed by Todd Stephens
• Class of '83 is 2004 film directed by Kurt E. Soderling
• 83 Hours 'Til Dawn is a 1990 film directed by Donald Wrye
• 83 is the highest UHF channel on older
  cellular phone service there in the late 1970s-early 1980s). As an example, the television station CIVIC-TV managed by the James Woods character Max Renn in the 1983 film Videodrome
  was on Channel 83.

Eighty-three is also:

• The year AD 83, 83 BC, or 1983
• The TI-83 series, graphing calculators from Texas Instruments
• Konsept83 is a Greek graphic design team.
• The model number of Bell XP-83
• The number of the
  French department Var
• The ISBN Group Identifier for books published in Poland
• The eighth letter of the alphabet is H and the third letter is C, thus 83 stands for "Heil Christ," a greeting sometimes (not always) used by racist organizations that consider themselves also to be Christian.^[6] This symbology is also known to be used by many non-racist^[6] Christians and non-denominational Churches.
• An emoticon based on :3 with wide-open eyes.

References