Primes whose digit reversal is a pentagonal number (A000326).

Terms

a(0) =5a(1) =29a(2) =53a(3) =541a(4) =673a(5) =2239a(6) =5273a(7) =6257a(8) =7753a(9) =10567a(10) =10861a(11) =10883a(12) =15137a(13) =27793a(14) =28447a(15) =28723a(16) =29201a(17) =52639a(18) =54001a(19) =56041a(20) =59863a(21) =62143a(22) =67189a(23) =67349a(24) =74587a(25) =76771a(26) =103591a(27) =103811a(28) =104971a(29) =108643