It is, there is a global varible
$Server::Brickcount = 0;
Something like that, which will allow you to cotinue to build.
Here is a picture of 128000 bricks.
Then I built a castle. Resetting the bricks to 0.
Then setting the amount to 10,000,000 or a number similar.
Oh yes, the duplicator stops working at 128000, no matter what.