2015

Number
$2015$ (two thousand and fifteen) is:


 * $5 \times 13 \times 31$


 * The $3$rd Lucas-Carmichael number after $399, 935$:
 * $\left({5 + 1}\right) \mathrel \backslash \left({2015 + 1}\right)$, $\left({13 + 1}\right) \mathrel \backslash \left({2015 + 1}\right)$, $\left({31 + 1}\right) \mathrel \backslash \left({2015 + 1}\right)$