Summary statistics for primaryid variable in reac2013q3 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |    585,411    1.10e+08    1.01e+08   3.44e+07   9.38e+08

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