# 115 (number)

| ||||
---|---|---|---|---|

Cardinal | one hundred fifteen | |||

Ordinal | 115th (one hundred fifteenth) | |||

Factorization | 5 × 23 | |||

Divisors | 1, 5, 23, 115 | |||

Greek numeral | ΡΙΕ´ | |||

Roman numeral | CXV | |||

Binary | 1110011_{2} | |||

Ternary | 11021_{3} | |||

Quaternary | 1303_{4} | |||

Quinary | 430_{5} | |||

Senary | 311_{6} | |||

Octal | 163_{8} | |||

Duodecimal | 97_{12} | |||

Hexadecimal | 73_{16} | |||

Vigesimal | 5F_{20} | |||

Base 36 | 37_{36} |

**115 (one hundred [and] fifteen)** is the natural number following 114 and preceding 116.

## In mathematics[edit]

115 has a square sum of divisors:^{[1]}

There are 115 different rooted trees with exactly eight nodes,^{[2]} 115 inequivalent ways of placing six rooks on a 6 × 6 chess board in such a way that no two of the rooks attack each other,^{[3]} and 115 solutions to the stamp folding problem for a strip of seven stamps.^{[4]}

115 is also a heptagonal pyramidal number.^{[5]} The 115th Woodall number,

is a prime number.^{[6]}

## In science[edit]

- The atomic number of the element Moscovium

## In other fields[edit]

**115** is also the fire service emergency number in Mauritius^{[7]} and Italy,^{[8]}
and the ambulance emergency number in Vietnam.^{[9]}

## See also[edit]

## References[edit]

**^**Sloane, N. J. A. (ed.). "Sequence A006532 (Numbers n such that sum of divisors of n is a square)".*The On-Line Encyclopedia of Integer Sequences*. OEIS Foundation.**^**Sloane, N. J. A. (ed.). "Sequence A000081 (Number of rooted trees with n nodes (or connected functions with a fixed point))".*The On-Line Encyclopedia of Integer Sequences*. OEIS Foundation.**^**Sloane, N. J. A. (ed.). "Sequence A000903 (Number of inequivalent ways of placing n nonattacking rooks on n X n board)".*The On-Line Encyclopedia of Integer Sequences*. OEIS Foundation.**^**Sloane, N. J. A. (ed.). "Sequence A002369 (Number of ways of folding a strip of n rectangular stamps)".*The On-Line Encyclopedia of Integer Sequences*. OEIS Foundation.**^**Sloane, N. J. A. (ed.). "Sequence A002413 (Heptagonal (or 7-gonal) pyramidal numbers: n*(n+1)*(5*n-2)/6)".*The On-Line Encyclopedia of Integer Sequences*. OEIS Foundation.**^**Sloane, N. J. A. (ed.). "Sequence A002234 (Numbers n such that the Woodall number n*2^n - 1 is prime)".*The On-Line Encyclopedia of Integer Sequences*. OEIS Foundation.**^**Cheong-Lum, Roseline Ng (2009),*CultureShock! Mauritius: A Survival Guide to Customs and Etiquette*, Marshall Cavendish International Asia Pte Ltd, p. 287, ISBN 9789814435604.**^***DK Eyewitness Travel Guide: Italy*, Penguin, 2013, p. 619, ISBN 9781465414946.**^***The Rough Guide to Southeast Asia On A Budget*, Penguin, 2014, p. 1286, ISBN 9780241012727.