63 (number)

Sixty-three is a natural number following 62 and preceding 64.

List of numbersIntegers

<< 60 61 62 63 64 65 66 67 68 69 >>

Cardinal sixty-three
Ordinal63rd (sixty-third)
Factorization<math>3^2 \cdot 7<math>
Divisors 3, 7, 9, 21
Roman numeralLXIII
Binary111111
Hexadecimal3F

In mathematics

Although a number of the form 2n - 1, 63 is technically not a Mersenne number since n is not prime and 63 is certainly not prime either. It is a Woodall number and a Harshad number. It is a highly cototient number.

In science

In astronomy,

Messier object M63, a magnitude 8.5 galaxy in the constellation Canes Venatici, also known as the Sunflower Galaxy.
The New General Catalogue object (http://www.ngcic.org/) NGC 63, a spiral galaxy in the constellation Pisces
The Saros number (http://sunearth.gsfc.nasa.gov/eclipse/SEsaros/SEsaros1-175.html) of the solar eclipse series which began on -879 April 20 and ended on 401 May 29. The duration of Saros series 63 was 1280.1 years, and it contained 72 solar eclipses.
The Saros number (http://sunearth.gsfc.nasa.gov/eclipse/LEsaros/LEsaros1-175.html) of the lunar eclipse series which began on -758 October 12 and ended on 739 March 29. The duration of Saros series 63 was 1496.5 years, and it contained 84 lunar eclipses.

In other fields

Sixty-three is:


es:Sesenta y tres

eo:Sesdek tri fr:63 (nombre) ko:63 ia:63 it:Sessantatré ja:63 pt:Sessenta e três sl:63 (število) sv:63 (tal) zh:63

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