1884881domain: NPropertiesPrimalityPrimeyesAppears in sequencesPalindromic prime concatenated with next palindromic prime is a prime.at n=20A030462Palindromic primes with middle digit 4.at n=23A082440Smallest beginning of a sequence of exactly n consecutive palindromic primes, all ending with the same digit.at n=26A382927Prime numbersat n=140981