524351domain: NPropertiesPrimalityPrimeyesAppears in sequencesSmallest twin prime > 2^n.at n=18A208572Union of A208572 and A208573.at n=33A208574Numbers k such that A163511(k) is a seventh power.at n=35A366287Smallest Sophie Germain prime >= 2^n.at n=19A367966Prime numbersat n=43394