170123domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes p such that each of the numbers p^k for k=1..5 has exactly two 1s in its decimal representation.at n=18A175964Primes p such that each of the decimal numbers p^k for k=1..6 has exactly two 1s.at n=3A175972Prime numbersat n=15508