1379

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Number

$1379$ (one thousand, three hundred and seventy-nine) is:

$7 \times 197$

The magic constant of a magic square of order $14$, after $1$, $(5)$, $15$, $34$, $65$, $111$, $175$, $260$, $369$, $505$, $671$, $870$, $1105$:

$\ds 1379 = \dfrac 1 {14} \sum_{k \mathop = 1}^{14^2} k = \dfrac {14 \paren {14^2 + 1} } 2$

Also see

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