Problem Statement

A super-d number is a positive, decimal (base ten) integer   n   such that   d × nd   has at least   d   consecutive digits   d   where For instance, 753 is a super-3 number because 3 × 7533 = 1280873331.

Super-d   numbers are also shown on   MathWorld™   as   super-d   or   super-d.

Let's start with the solution:

var [const] BI=Import("zklBigNum");  // libGMP

fcn superDW(d){
   digits:=d.toString()*d;
   [2..].tweak('wrap(n)
      { BI(n).pow(d).mul(d).toString().holds(digits) and n or Void.Skip });
}
foreach d in ([2..8]){ println(d," : ",superDW(d).walk(10).concat(" ")) }