What is the oldest company in the world and still in progress?

Question

i was study The Entrepreneurial Revolution and i asked my self what is the name of the oldest company in the world still working ?? do you have answer and please give me the starting date if you can

Answer 1

The oldest occupation in the world is of course prostitution.  I guess that does not fit into a corp. tho.  

Answer 2

i think Zildjian, the Cymbal company is the oldest company in the U.S. but thats not the oldest in the world.

Answer 3

God Inc - we've gone forth and multiplied. Creation date: 0000