1255

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Number

$1255$ (one thousand, two hundred and fifty-five) is:

$5 \times 251$

The $14$th non-square positive integer which cannot be expressed as the sum of a square and a prime:

$10$, $34$, $58$, $85$, $91$, $130$, $214$, $226$, $370$, $526$, $706$, $730$, $771$, $1255$, $\ldots$

The number of integer partitions for $23$:

$\map p {23} = 1255$

The $31$st positive integer which cannot be expressed as the sum of a square and a prime:

$1$, $10$, $25$, $34$, $58$, $64$, $85$, $\ldots$, $706$, $730$, $771$, $784$, $841$, $1024$, $1089$, $1225$, $1255$, $\ldots$

Also see

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