205949domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes p such that the differences between the 5 consecutive primes starting with p are (2,6,6,4).at n=12A078950Lesser of twin primes P(k) and P(k+1) such that Sd(P(k)) + Sd(P(k+1)) = Sd(k) + Sd(k+1), where Sd(x) is the sum of digits of x.at n=25A277111Prime numbersat n=18457