OpenConsole()
Define.i base, c1, c2, k

base = 10
c1 = 0
c2 = 0
For k = 1 To Pow(base, 2) - 1
  c1 + 1
  If k % (base - 1) = (k * k) % (base - 1)
    c2 + 1
    Print(Str(k) + " ")
  EndIf
Next k

PrintN(#CRLF$ + "Trying " + Str(c2) + " numbers instead of " + Str(c1) + " numbers saves " + Str(100 - (100 * c2 / c1)) + "%")

PrintN(#CRLF$ + "Press ENTER to exit"): Input()
CloseConsole()