117 (number)

117 (one hundred [and] seventeen) is the natural number following 116 and preceding 118.

In mathematics

117 is the smallest possible length of the longest side of a Heronian tetrahedron (one whose sides are all rational numbers).^[1][2]

117 is a pentagonal number.

In base 10, 117 is a Harshad number.

In other fields

One hundred seventeen is also:

• "117" is the number of the Halo series's protagonist Master Chief.
• The atomic number of a recently discovered element temporarily called ununseptium
• A substitute for the number 17, which is considered unlucky in Italy. When Renault exported the R17 to Italy, it was renamed R117.^[3]
• The number to call Guardia di Finanza for customs/financial/border police in Italy
• The fire emergency telephone number in Portugal
• 1-1-7 is the national emergency telephone number in the Philippines
• The police emergency telephone number in Switzerland
• The code number of agent Hubert Bonisseur de La Bath in OSS 117.
• Psalm 117 is the exact middle chapter of the King James version of the Bible.
• F-117 is the designation of the first operational stealth attack aircraft.
• The 1992 United States men's Olympic basketball team averaged 117 points per game.
• In The Mystery of Element 117 (1949) by Milton Smith, a window is opened into a new "hyperplane of hyperspace" containing those who have already died on earth.
• The Japanese telephone company NTT provides a non-free speaking clock on the nationally universal number 117.

See also

• List of highways numbered 117
• National longevity recordholders
• Oldest people

References

1. ↑ Ivars Peterson, "Perfect Pyramids" MAA Online July 28, 2003
2. ↑ Weisstein, Eric W. "Heronian Tetrahedron." From MathWorld--A Wolfram Web Resource. http://mathworld.wolfram.com/HeronianTetrahedron.html
3. ↑ Niederman, Derrick (2009), Number Freak: From 1 to 200- The Hidden Language of Numbers Revealed, Penguin, p. 10, ISBN 9781101135488 .

External links

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