"Source: Text/Basics/RngInt.text";
"Line: 2027";
"Date: Thu Sep 25 14:47:46 2025";
"Main: Fri Sep 26 14:29:19 2025";
// original file: Text/Basics/RngInt.text, line: 2027
// Example: H19E6 ()
print "Example: H19E6";
ei := GetEchoInput();
SetEchoInput(true);
NextPPRepunit := function(nn)
   n := nn;
   repeat
      n := NextPrime(n);
   until IsProbablePrime( (10^n-1) div 9 : Bases := 5);
   return n;
end function;
NextPPRepunit(1);
assert $1 eq 2;
NextPPRepunit(2);
assert $1 eq 19;
NextPPRepunit(19);
assert $1 eq 23;
NextPPRepunit(23);
assert $1 eq 317;
SetEchoInput(ei);
