429

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Number

$429$ (four hundred and twenty-nine) is:

$3 \times 11 \times 13$

The $7$th Catalan number after $(1)$, $1$, $2$, $5$, $14$, $42$, $132$:

$429 = \dfrac 1 {7 + 1} \dbinom {2 \times 7} 7 = \dfrac 1 8 \times 3432$

The $49$th sphenic number after $30$, $42$, $66$, $70$, $\ldots$, $385$, $399$, $402$, $406$, $410$, $418$, $426$:

$429 = 3 \times 11 \times 13$

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