And, by the way,

584000-586000 Nuri
606000-608000 Nuri
628000-630000 Nuri

etc. are just coincidences. A couple of weeks ago, I convinced three of my friends to run sieve client on their PCs, but I was not sure of their reliability and speed. I chose those ranges for their machines. If they progress slowly, they'll have time until sieve catches up. Ranges are a bit apart from each other, because if they did nothing at all, I'll be able to take over at some point, and still catch up with the sieve.