As others have said it is obviously a burn address. The large number of 1 in the beginning just makes it easy to spot. I could just as easily install a new copy of core, copy the 1st address it gave me and then shut it down and delete my wallet.dat file. But it's impossible to prove that.
If you see an address like my vanity address: 1MocACiWLM8bYn8pCrYjy6uHq4U3CkxLaa you can easily see the "vanity" part is only 6 characters... If you have a GPU farm and a lot of time, you could probably go to 10 or 11 (i guess, not calculated tough), but more than that doesn't seem feasible.
8 or 9 is about the limit, not counting the 1 at the beginning, that you can do with a sane sized GPU farm. The new 4xxx Nvidia stuff might do better, but it's so power hungry and overpriced at the moment that it's not a real option. Also, some addresses of even the same length are going to be more difficult and take longer to find then others.
Others have posted links to some guides here are the discussions about the actual code / software:
https://bitcointalk.org/index.php?topic=5112311.0and
https://bitcointalk.org/index.php?topic=25804.0If you want to pay someone to do it user WhyFly has a service:
https://bitcointalk.org/index.php?topic=5397602-Dave