118 (number)
| ||||
|---|---|---|---|---|
| Cardinal | one hundred eighteen | |||
| Ordinal |
118th (one hundred and eighteenth) | |||
| Factorization | 2 × 59 | |||
| Divisors | 1, 2, 59, 118 | |||
| Roman numeral | CXVIII | |||
| Binary | 11101102 | |||
| Ternary | 111013 | |||
| Quaternary | 13124 | |||
| Quinary | 4335 | |||
| Senary | 3146 | |||
| Octal | 1668 | |||
| Duodecimal | 9A12 | |||
| Hexadecimal | 7616 | |||
| Vigesimal | 5I20 | |||
| Base 36 | 3A36 | |||
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 medical and Alpine rescue emergency telephone number in Italy
In other fields
One hundred and eighteen is also:
- The amount of elements on the periodic table
- Ununoctium, an element with atomic number 118
- 118 (TV series), a 255-episode Singaporean television drama airing from 2014 to 2015
- 118 (Robotics Team), have you seen 118? [3]
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
- ↑
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