Summary statistics for primaryid variable in ther2018q4 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |    620,308    1.94e+08    2.16e+08   3.76e+07   1.56e+09

by Jean Roth , jroth@nber.org , 7 Mar 2019