7278727domain: NPropertiesPrimalityPrimeyesAppears in sequencesFractal palindromic primes of second order.at n=4A067899Palindromes of the form 6n + 1 where n is also a palindrome. palindromes arising in A083835.at n=16A083836Palindromes in A087386.at n=38A087387Palindromic primes with digit sum = 40.at n=12A109185Prime numbersat n=494321