3089803domain: NPropertiesPrimalityPrimeyesAppears in sequencesPalindromic primes of the form 'primemirp' resulting from A054217.at n=29A054218Palindromic primes with middle digit 9.at n=21A082445Number of compositions (ordered partitions) of n into tribonacci numbers 1,2,4,7,13,24, ... (A000073).at n=27A357451Prime numbersat n=222829