194
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Number
$194$ (one hundred and ninety-four) is:
- $2 \times 97$
- The $6$th positive integer solution after $1, 3, 15, 104, 164$ to $\map \phi n = \map \phi {n + 1}$:
- $\map \phi {194} = 96 = \map \phi {195}$
- The $28$th nontotient:
- $\nexists m \in \Z_{>0}: \map \phi m = 194$
- where $\map \phi m$ denotes the Euler $\phi$ function