103 (number)

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103 is the natural number following 102 and preceding 104.

103
Cardinal one hundred [and] three
Ordinal 103rd
(one hundred [and] third)
Numeral system 103
Factorization prime
Prime 27th
Divisors 1, 103
Roman numeral CIII
Binary 1100111
Hexadecimal 67

Contents

[edit] In mathematics

One hundred [and] three is the 27th prime number. The previous prime is 101, making them both twin primes.

103 is a strictly non-palindromic number.

[edit] In science

In astronomy,

Messier object M103, a magnitude 7.0 open cluster in the constellation Cassiopeia
The New General Catalogue object NGC103, an open cluster in the constellation Cassiopeia
Asteroid 103 Hera
The Saros number of the solar eclipse series which began on 387 April 4 and ended on 1667 May 22. The duration of Saros series 103 was 1280.1 years, and it contained 72 solar eclipses.
The Saros number of the lunar eclipse series which began on 454 August 24 and ended on 1951 February 21. The duration of Saros series 103 was 1496.5 years, and it contained 84 lunar eclipses.
  • The number of 'non-stellar objects' - galaxies, nebulae and star clusters - listed by Charles Messier in his catalogue in 1784. (Note: this was later extended to 110 objects)

[edit] In other fields

When "and" is required for the number name, 103 is the smallest number requiring 18 letters when spelled out in English.

One hundred three is also:

[edit] In the space program

[edit] In sports

[edit] See also

[edit] References

  • Wells, D. The Penguin Dictionary of Curious and Interesting Numbers London: Penguin Group. (1987): 133