218

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Number

$218$ (two hundred and eighteen) is:

$2 \times 109$

The $32$nd nontotient:

$\nexists m \in \Z_{>0}: \phi \left({m}\right) = 218$

where $\phi \left({m}\right)$ denotes the Euler $\phi$ function

The $20$th noncototient after $10$, $26$, $34$, $50$, $52$, $58$, $86$, $100$, $116$, $122$, $130$, $134$, $146$, $154$, $170$, $172$, $186$, $202$, $206$:

$\nexists m \in \Z_{>0}: m - \phi \left({m}\right) = 218$

where $\phi \left({m}\right)$ denotes the Euler $\phi$ function

Also see

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