117 is the natural number following 116 and preceding 118.
One hundred seventeen is the smallest possible length of the longest side of a Heronian tetrahedron (one whose sides are all rational numbers). It is also a pentagonal number and a Harshad number.
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In astronomy, the Saros number of the solar eclipse series which began on 792 June 24 at 05:51:16 UT and will end on 2054 August 3 at 18:01:55 UT. The duration of Saros series 117 is 1262.11 years, and it contains 71 solar eclipses.
- The Saros number of the lunar eclipse series which began on 1094 April 3 at 17:26:38 UT and will end on 2374 May 26 at 19:33:35 UT. The duration of Saros series 119 is 1280.14 years, and it contains 72 lunar eclipses.
- The NGC (New General Catalog) [1] http://www.ngcic.org/ object 117, a 15th magnitude spiral galaxy in the constellation Cetus
One hundred seventeen is also:
Last updated: 05-02-2005 19:59:51