83 (NUMBER)

83	80	3

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

Cardinal	83 eighty-three
Ordinal	83rd eighty-third
Factorization	$prime$
Divisors	1, 83
Roman numeral	LXXXIII
Binary	01010011
Hexadecimal	53

Contents

In mathematics

In astronomy

In Judaism

In other fields

In sports

In mathematics

'Eighty-three' is the sum of three consecutive primes (23 + 29 + 31) as well as the sum of five consecutive primes (11 + 13 + 17 + 19 + 23).
It is also the 23rd prime number, following 79 and preceding 89. 83 is a Sophie Germain prime and a safe prime, and also a Chen prime. It is an Eisenstein prime with no imaginary part and real part of the form $3n\; -\; 1$.
It is also a highly cototient number.

In astronomy

★ Messier object M83, a magnitude 8.5 spiral galaxy in the constellation Hydra, also known as the Southern Pinwheel Galaxy

★ The New General Catalogue object NGC 83, a magnitude 12.3 elliptical galaxy in the constellation Andromeda

★ The Saros number of the solar eclipse series which began on -210 May 5 and ended on 1052 May 30. The duration of Saros series 83 was 1262.1 years, and it contained 71 solar eclipses. The Saros number of the lunar eclipse series which began on -197 August 22 and ended on 1318 February 16. The duration of Saros series 83 was 1514.5 years, and it contained 85 lunar eclipses.

In Judaism

In Judaism when someone reaches 83 they may celebrate a "second bar mitzvah."

In other fields

'Eighty-three' is also:

★ The atomic number of bismuth.

★ The year AD '83', 83 BC, or 1983.

★ Robert Urich starred in the film, "83 Hours 'Til Dawn"

★ the model number of Bell XP-83

★ the number of the French department Var

★ the designation of Interstate 83, a freeway that runs from Maryland to Pennsylvania; European route E83 from Bjala to Sofia

★ The ISBN Group Identifier for books published in Poland

★ 83 is the highest UHF channel on older televisions made before the late 1970s (newer televisions only go up to channel 69, due to the frequency spectrum previously assigned to channels 70-83 in the USA being re-assigned to cellular phone service there in the late 1970s-early 1980s).

★ 83 is a song written by John Mayer in the ''Room for Squares'' album.

★ M83 is a French electronic music group.

★ No stable isotope of any element has an atomic mass number of 83.

★ The television program “Lost in Space” (1965-68) aired for 83 episodes.

★ Thomas Jefferson died at age 83 on the 4th of July, 1826

★ Frank Sinatra charted 83 Billboard Top 200 albums

In sports

★ The car number of NASCAR driver Brian Vickers of Team Red Bull

★ The 2006-07 NBA season opening night rosters featured a record 83 international players from 37 countries.
'NFL'

★ Buffalo Bills Andre Reed wore #83

★ Pittsburgh Steelers Louis Lipps wore #83

★ Miami Dolphins Mark Clayton wore #83

★ Oakland Raiders Ted Hendricks wore #83

★ Philadelphia Eagles Vince Papale wore #83

★ San Diego Chargers John Jefferson wore #83

★ Cincinnati Bengals Antonio Chatman wears #83

★ Denver Broncos Brandon Stokley wears #83

★ Pittsburgh Steelers Heath Miller wears #83

★ St Louis Rams Drew Bennett wears #83

★ Philadelphia Eagles Greg Lewis wears #83
'NHL'

★ Edmonton Oilers Ales Hemsky wears #83