Took me a second look to realize what's going on. First thought was "only 54 iterations?" as in, (initial error) * 54 >= 1. On the second look, it clicked that

Took me a second look to realize what's going on. First thought was "only 54 iterations?" as in, (initial error) * 54 >= 1. On the second look, it clicked that no, it's actually more like (initial error) * 2^54 >= 1