3 ms·26^5 is 11881376, surely there aren't that many users here yet (?)by dheera 5y ago26^5 is 11881376, surely there aren't that many users here yet (?)OJFord 5y agoAnd 36^5 is even a bit bigger. (Numbers are allowed. Think that's it though - case is recorded, but I don't think you can sign up Dheera, because dheera exists.)mkl 5y agoUnderscores and hyphens are allowed too, so it's at least 38^5 ≈ 79e6.