316

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Number

$316$ (three hundred and sixteen) is:

$2^2 \times 79$

The $2$nd of the $3$rd ordered triple of consecutive integers after $\tuple {105, 106, 107}$ and $\tuple {165, 166, 167}$ that have Euler $\phi$ values which are strictly increasing:

$\map \phi {315} = 144$, $\map \phi {316} = 156$, $\map \phi {317} = 316$

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