# 117 (number)

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Cardinal | one hundred seventeen | |||

Ordinal |
117th (one hundred seventeenth) | |||

Factorization |
3^{2}× 13 | |||

Divisors | 1, 3, 9, 13, 39, 117 | |||

Greek numeral | ΡΙΖ´ | |||

Roman numeral | CXVII | |||

Binary |
1110101_{2} | |||

Ternary |
11100_{3} | |||

Quaternary |
1311_{4} | |||

Quinary |
432_{5} | |||

Senary |
313_{6} | |||

Octal |
165_{8} | |||

Duodecimal |
99_{12} | |||

Hexadecimal |
75_{16} | |||

Vigesimal |
5H_{20} | |||

Base 36 |
39_{36} |

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

## Contents

## In mathematics[edit]

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.^{[3]}

In base 10, 117 is a Harshad number.^{[4]}

## In science[edit]

- The atomic number of the element Tennessine

## In arts and media[edit]

## In other fields[edit]

**One hundred seventeen** is also:

- A substitute for the number 17, which is considered unlucky in Italy. When Renault exported the R17 to Italy, it was renamed R117.
^{[5]} - The number to call Guardia di Finanza for customs/financial/border police in Italy
- The fire emergency telephone number in Portugal
- 1-1-7 was the national emergency telephone number in the Philippines until August 1, 2016, when it was superseded by 9-1-1.
^{[6]} - The police emergency telephone number in Switzerland
- F-117 is the designation of the first operational stealth attack aircraft.
- OSS 117, the codename for the fictional secret agent Hubert Bonisseur de La Bath by author Jean Bruce and later for a film series directed mostly by André Hunebelle.
- Psalm 117 is the exact middle chapter of the King James version of the Bible.
- 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[edit]

## References[edit]

**^**Ivars Peterson, "Perfect Pyramids"*MAA Online*July 28, 2003**^**Weisstein, Eric W. "Heronian Tetrahedron." From MathWorld--A Wolfram Web Resource. http://mathworld.wolfram.com/HeronianTetrahedron.html**^**"Sloane's A000326 : Pentagonal numbers".*The On-Line Encyclopedia of Integer Sequences*. OEIS Foundation. Retrieved 2016-05-27.**^**"Sloane's A005349 : Niven (or Harshad) numbers".*The On-Line Encyclopedia of Integer Sequences*. OEIS Foundation. Retrieved 2016-05-27.**^**Niederman, Derrick (2009),*Number Freak: From 1 to 200- The Hidden Language of Numbers Revealed*, Penguin, p. 10, ISBN 9781101135488.**^**Alvarez, Chito (July 22, 2016). "DILG to implement 'Emergency hotline 911' in August".*Manila Bulletin*. Retrieved July 29, 2016.

## External links[edit]

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