118 (number)
| ||||
|---|---|---|---|---|
| Cardinal | one hundred eighteen | |||
| Ordinal | 118th (one hundred eighteenth) | |||
| Factorization | 2 × 59 | |||
| Divisors | 1, 2, 59, 118 | |||
| Greek numeral | ΡΙΗ´ | |||
| Roman numeral | CXVIII | |||
| Binary | 11101102 | |||
| Ternary | 111013 | |||
| Senary | 3146 | |||
| Octal | 1668 | |||
| Duodecimal | 9A12 | |||
| Hexadecimal | 7616 | |||
118 (one hundred [and] eighteen) is the natural number following 117 and preceding 119.
In mathematics
There is no answer to the equation φ(x) = 118, making 118 a nontotient.
118 is the smallest n such that the range n, n + 1, ... 4n/3 contains at least one prime from each of these forms: 4x + 1, 4x - 1, 6x + 1 and 6x - 1.
Four expressions for 118 as the sum of three positive integers have the same product:
- 14 + 50 + 54 = 15 + 40 + 63 = 18 + 30 + 70 = 21 + 25 + 72 = 118 and
- 14 × 50 × 54 = 15 × 40 × 63 = 18 × 30 × 70 = 21 × 25 × 72 = 37800.
118 is the smallest number that can be expressed as four sums with the same product in this way.[1]
In telephony
- The beginning of directory enquiries numbers in the United Kingdom,[2] France, Germany, Greece, Latvia, Sweden, Ireland, Iran and Turkey
- The emergency at sea emergency telephone number in Japan
- The fire emergency telephone number in Switzerland
- The medical emergency telephone number in Bolivia and Indonesia
- The Emergency medical services in Italy
In other fields
One hundred and eighteen is also:
- Oganesson, an element with atomic number 118
- 118 (TV series), a 255-episode Singaporean television drama airing from 2014 to 2015
In dates
- 118 can also represent the day January 18. The 118th day of the year is April 28, on regular years. On leap years it is April 27.
See also
References
Wikimedia Commons has media related to 118 (number).
- ^ Wells, D. The Penguin Dictionary of Curious and Interesting Numbers London: Penguin Group. (1987): 134 - 135
- ^ List of UK 118 directory enquiry services