Summary statistics for primaryid variable in ther2016q2 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |    466,661    1.36e+08    1.15e+08   4.17e+07   1.23e+09

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