306
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Number
$306$ (three hundred and six) is:
- $2 \times 3^2 \times 17$
- The $24$th untouchable number after $2$, $5$, $52$, $88$, $96$, $120$, $124$, $\ldots$, $262$, $268$, $276$, $290$, $292$, $304$
Also see
Historical Note
$306$ was the number selected more or less at random by R. William Gosper when he wished to test a new technique for calculating roots using continued fractions.
He calculated its $7$th root to $2800$ digits.
It starts:
- $2 \cdotp 26518 \ldots$