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.
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.
Because of its expression as , it is a Leyland number of the second kind.
118!! - 1 is a prime number, where !! denotes the double factorial (the product of even integers up to 118).
In other fields
There are 118 known elements on the Periodic Table, the 118th element being oganesson.
See also
118 (disambiguation)