There is no sense at all listing or selling your 3/4 digit ens names. While PFPs and other NFTs come and go, these numbers are naturally the best and permanent NFTs in the crypto world. Math rules everything. Cannot ever be overvalued. Besides, all the NFTs will have only subdomains of 10K domains we hold. 10E fp? Thats short of imagination. Prime and palindrome are definitely top features.