305

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Number

$305$ (three hundred and five) is:

$5 \times 61$

The $17$th integer after $7$, $13$, $19$, $35$, $38$, $41$, $57$, $65$, $70$, $125$, $130$, $190$, $205$, $223$, $253$, $285$ the decimal representation of whose square can be split into two parts which are each themselves square:

$305^2 = 93 \, 025$; $9 = 3^2$, $3025 = 55^2$

Also see

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