107

Number
$107$ (one hundred and seven) is:


 * The $28$th prime number


 * The $9$th emirp after $13, 17, 31, 37, 71, 73, 79, 97$


 * The $4$th of the $2$nd ordered quadruple of consecutive integers that have sigma values which are strictly decreasing:
 * $\sigma \left({104}\right) = 210, \ \sigma \left({105}\right) = 192, \ \sigma \left({106}\right) = 162, \ \sigma \left({107}\right) = 108$

Also see