Addendum of 25 June 2001

We now know where the first nine Gaussian prime
castles are. Their centers are:

  7743838 +   4598293 i
140741248 + 105791593 i
201790873 +  55135858 i
202402978 +  61379563 i
279495838 +  52678663 i
287580343 +  85596808 i
298168648 +  35942203 i
271922428 + 159229393 i
281035558 + 258912223 i