There are many sites talking about how ancient Babylon used their numbering systems and all this crap. But the truth is those people had to have learned it from somewhere. Noah knew the numbering system too. He counted each of the animals and knew how long before YHWH would bring the flood. He knew the all of those things. So if you read anything about the ancient Babylonians creating the numbering systems, they are wrong and misleading because these ancient Babylonians had to learn the numbering systems from someone else.
Rev 13:11 Then I saw another beast coming up out of the earth, and he had two horns like a lamb and spoke like a dragon.
Sounds to me like any man walking on earth today.
12 And he exercises all the authority of the first beast in his presence, and causes the earth and those who dwell in it to worship the first beast, whose deadly wound was healed.
Pride & sin set in the minds of people.
13 He performs great signs, so that he even makes fire come down from heaven on the earth in the sight of men.
Pride, greed, selfishness, blasphemy & compromising the laws of God
14 And he deceives those[e] who dwell on the earth by those signs which he was granted to do in the sight of the beast, telling those who dwell on the earth to make an image to the beast who was wounded by the sword and lived.
What is Satans image? All those who love to sin
15 He was granted power to give breath to the image of the beast, that the image of the beast should both speak and cause as many as would not worship the image of the beast to be killed.
Who can give life to the image of Satan? People of the world through sin.
16 He causes all, both small and great, rich and poor, free and slave, to receive a mark on their right hand or on their foreheads,
If you read in the old testament how YHWH led the Israelites out of Egypt by his mighty right hand, you will notice it is his actions that did this. So therefore, right hand means actions. After all, actions speak louder than words. The forehead represents your thoughts. Jesus judges by the heart and man. Not to mention in Genesis 6:5 he states every imagination of the thoughts of his heart are only evil continually. So the forehead = thoughts, the right hand = actions.
17 and that no one may buy or sell except one who has the mark or[f] the name of the beast, or the number of his name.
Mankind continually blaspheming and sinning against YHWH in Yeshua's name through their thoughts and actions.
18 Here is wisdom. Let him who has understanding calculate the number of the beast, for it is the number of a man: His number is 666.
What does Adam mean? Adam = man On what day was Adam (man) created? The 6th day.
Guess what? 666 represents and infinite number of mankind committing sins and abominations here on this earth. That is why flesh & blood cannot inherit the kingdom of heaven. For all have sinned and fell short of YHWHs glory.
Look at what you are seeing today! Atheists blaspheming, so much fornication, adultery, rape, pedophilia, murders, abortions, robberies, thefts, liars, corruption in the government, pride, selfishness, greed, jealousies, gluttonous people, no discipline in the "so-called" Christian congregation, deceit, etc...
Remember the words of Yeshua (Jesus) in Matthew 5:20 For I say unto you, That except your righteousness shall exceed the righteousness of the scribes and pharisees, ye shall in no wise enter into the kingdom of heaven.