Summary statistics for primaryid variable in rpsr2013q4 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |     26,710    9.70e+07    1.25e+07   4.78e+07   8.42e+08

by Jean Roth , jroth@nber.org , 6 Apr 2017