var
  hs:array[1..46340]of boolean;
  zs:array[1..4792]of longint;
  i,j,k:longint;
  hh:boolean;
begin
for i:=2 to 46340 do begin
  if not hs[i] then begin j:=j+1; zs[j]:=i; end;
  k:=i+i;
  while k<46341 do begin hs[k]:=true; k:=k+i; end;
  end;
while not eof do begin
  readln(j);
  if j=2147483647 then writeln('質數')
                  else begin
  k:=trunc(sqrt(j));
  for i:=1 to 4792 do begin
    if zs[i]>k then break;
    if j mod zs[i]=0 then begin hh:=true; break; end;
    end;
  if hh then writeln('非質數')
    else writeln('質數');
  hh:=false;
    end;
  end;
end.