253243domain: NPropertiesPrimalityPrimeyesAppears in sequencesSmallest prime p such that first n primes (p_1=2, ..., p_n) are 11th power residues mod p.at n=2A002228The binary expansion of a(n) is the reversal of the concatenation of the binary expansions of 1,...,n.at n=7A376295Prime numbersat n=22294