3315133domain: NPropertiesPrimalityPrimeyesAppears in sequencesPalindromic primes in which deleting the outside pair of digits yields a prime at every stage until finally a single-digit prime is obtained.at n=21A071119Palindromic in bases 10 and 36.at n=40A250412Minimal nested palindromic primes with seed 5.at n=3A261822Prime numbersat n=237919