The first thing that needs to be determined is who or what is The Wild Beast ?.....
Estephan
1And it stood still upon the sand of the sea.
And I saw a wild beast ascending out of the sea, with ten horns and seven heads, and upon its horns ten diadems, but upon its heads blasphemous names.2Now the wild beast that I saw was like a leopard, but its feet were as those of a bear, and its mouth was as a lion's mouth. And the dragon gave to [the beast] its power and its throne and great authority.
And I saw another wild beast ascending out of the earth, and it had two horns like a lamb, but it began speaking as a dragon.12And it exercises all the authority of the first wild beast in its sight. And it makes the earth and those who dwell in it worship the first wild beast, whose death-stroke got healed.13And it performs great signs, so that it should even make fire come down out of heaven to the earth in the sight of mankind.
And it puts under compulsion all persons, the small and the great, and the rich and the poor, and the free and the slaves, that they should give these a mark in their right hand or upon their forehead,17and that nobody might be able to buy or sell except a person having the mark, the name of the wild beast or the number of its name.18Here is where wisdom comes in: Let the one that has intelligence calculate the number of the wild beast, for it is a man's number; and its number is six hundred and sixty-six.