73 (number)

72 73 74
Cardinal seventy-three
Ordinal 73rd
(seventy-third)
Factorization prime
Prime 21st
Divisors 1, 73
Roman numeral LXXIII
Binary 10010012
Ternary 22013
Quaternary 10214
Quinary 2435
Senary 2016
Octal 1118
Duodecimal 6112
Hexadecimal 4916
Vigesimal 3D20
Base 36 2136

73 (seventy-three) is the natural number following 72 and preceding 74. In English, it is the smallest natural number with twelve letters in its spelled out name.

In mathematics

73 is:

Also:

In science

In astronomy,

Messier object M73, a magnitude 9.0 apparent open cluster in the constellation Aquarius
The New General Catalogue object NGC 73, a barred spiral galaxy in the constellation Cetus
The Saros number of the solar eclipse series which began on 717 BC July and ended on 582 September. The duration of Saros series 73 was 1298.1 years, and it contained 73 solar eclipses.
The number of seconds it took for the Space Shuttle Challenger OV-099 shuttle to explode after launch.

In other fields

73 is also:

In sports

See also

References

  1. "Sloane's A003154 : Centered 12-gonal numbers. Also star numbers: 6*n*(n-1) + 1". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-29.
  2. "Sloane's A006567 : Emirps". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-29.
  3. http://www.catholicbible101.com/thebible73or66books.htm
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