Summary statistics for primaryid variable in reac2015q3 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |  1,133,535    1.23e+08    9.58e+07   3.65e+07   1.15e+09

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