2191
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Number
$2191$ (two thousand, one hundred and ninety-one) is:
- $7 \times 313$
- The $8$th term of a sequence of $17$ consecutive integers all of which are not coprime with the product of the other $16$:
- $2191 \not \perp \ds \prod_{\substack {2184 \mathop \le k \mathop \le 2200 \\ k \mathop \ne 2191} } k$