182129domain: NPropertiesPrimalityPrimeyesAppears in sequencesLesser 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=23A277111Prime numbersat n=16507