"Source: Text/Basics/RngInt.text";
"Line: 1473";
"Date: Thu Sep 25 14:47:46 2025";
"Main: Fri Sep 26 14:29:19 2025";
// original file: Text/Basics/RngInt.text, line: 1473
// Example: H19E5 ()
print "Example: H19E5";
ei := GetEchoInput();
SetEchoInput(true);
d := func< m | DivisorSigma(1, m)-m >;
z := func< m | d(d(m)) eq m >;
for m := 2 to 10000 do
    if z(m) then
        m, d(m);
    end if;
end for;
SetEchoInput(ei);
