Summary statistics for primaryid variable in reac2014q2 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |    653,685    1.14e+08    1.00e+08   3.31e+07   1.00e+09

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