1276
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Number
$1276$ (one thousand, two hundred and seventy-six) is:
- $2^2 \times 11 \times 29$
- The $29$th second pentagonal number after $2$, $7$, $15$, $26$, $\ldots$, $610$, $672$, $737$, $805$, $876$, $950$, $1027$, $1107$, $1190$:
- $1276 = \dfrac {28 \paren {3 \times 29 + 1} } 2$
- The $58$th generalized pentagonal number after $1$, $2$, $5$, $7$, $12$, $15$, $\ldots$, $925$, $950$, $1001$, $1027$, $1080$, $1107$, $1162$, $1190$, $1247$:
- $1276 = \dfrac {28 \paren {3 \times 29 + 1} } 2$