79 (number)
Encyclopedia : 7 : 79 : 79N : 79 (number)
79 (seventy-nine) is the natural number following 78 and preceding 80.
| Cardinal | 79 seventy-nine |
| Ordinal | 79th seventy-ninth |
| Factorization | [prime number] |
| Roman numeral | LXXIX |
| Binary | 1001111 |
| Hexadecimal | 4F |
In mathematics
Seventy-nine is the 22nd prime number. The next is eighty-three. Seventy-nine is a permutable prime, with ninety-seven. 79 is a Kynea number.79 is a strictly non-palindromic number.
79 is the smallest number that can't be represented as a sum of fewer than 19 fourth powers.
In science
- The atomic number of gold.
- Messier object M79, a magnitude 8.5 globular cluster in the constellation Lepus
- The New General Catalogue [object] NGC 79, a galaxy in the constellation Andromeda
- The Saros [number] of the solar eclipse series which began on -434 May 21 and ended on 828 June 16. The duration of Saros series 79 was 1262.1 years, and it contained 71 solar eclipses.
- The Saros [number] of the lunar eclipse series which began on -150 February 16 and ended on 1166 April 12. The duration of Saros series 79 was 1316.2 years, and it contained 74 lunar eclipses.
In other fields
Seventy-nine is also:
- The designation of Interstate 79, a freeway that runs from West Virginia to Pennsylvania.
- The number of original Star Trek episodes, not counting the first pilot, "The Cage", which was enclosed into "The Menagerie".
- The year AD 79, 79 BC, or 1979.
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