118

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Number

$118$ (one hundred and eighteen) is:

$2 \times 59$


The $37$th semiprime:
$118 = 2 \times 59$


The $15$th nontotient after $14$, $26$, $34$, $38$, $50$, $62$, $68$, $74$, $76$, $86$, $90$, $94$, $98$, $114$:
$\nexists m \in \Z_{>0}: \map \phi m = 118$
where $\phi \left({m}\right)$ denotes the Euler $\phi$ function


The $4$th term of the $2$nd $5$-tuple of consecutive integers have the property that they are not values of the $\sigma$ function $\map \sigma n$ for any $n$:
$\tuple {115, 116, 117, 118, 119}$


The smallest positive integer which is the sum of $4$ distinct ordered triples, each of which has the same product:
$118 = 14 + 50 + 54 = 15 + 40 + 63 = 18 + 30 + 70 = 21 + 25 + 72$
each of which has a product of $37 \, 800$


Also see



Sources