You can buy different sources to produce your cookies.
But is there any actual maximum in grandmas or factories you can have?
1 Answer
The game itself does not limit it in anyway, but javascript does. I'm not sure what happens after you get 2^53 of one factory as javascript loses its ability to keep track of individual integers. 2^53+1 = 2^53.
Another thing to note is that the cost to buy the next factory becomes Infinity relatively fast, which means you will need a supernatural cookies per second stat to make any progress in any reasonable timespan.