Summary statistics for primaryid variable in reac2012q4 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |    738,751    9.62e+07    7.34e+07   3.45e+07   8.81e+08

by Jean Roth , jroth@nber.org , 7 Apr 2017