Executive orders are numbered consecutively; at present the numbering is still in the low 5 digits (in the 13,000s).
http://www.archives.gov/federal-register/executive-orders/disposition.html
There is such a thing as a secret E.O., but they fall into the regular numbering scheme.
Another thing to remember is that the purpose of an E.O. is to give guidance and instruction to the executive branch in fulfilling its duty to see that the laws be faithfully carried out. Pick an E.O at random and read it. It will cite the specific statutes under which authorization for the provisions of the E.O. are claimed. They don't give a President a means of pulling legislation out of his nethers, or to rule by decree.
The tinfoil-hat brigade is still circulating lists of E.O.'s which purportedly give the President the power to confiscate everything that isn't red hot or welded to the deck and ship us all to concentration camps in the 106,000 white boxcars with built-in shackles the government bought from Gunderson Steel back in the early '90s. The next time you run across one of these lists, look up the E.O.s- it generally turns out that most of them were either superseded or abolished and that they are mostly about the divvying up of bureaucratic turf, rather than rounding people up and putting them on those boxcars.
Nevertheless, these lists continue to circulate- in the world of conspiracism there's no such thing as an obsolete claim.