Primes having only {1, 8, 9} as digits.

Terms

a(0) =11a(1) =19a(2) =89a(3) =181a(4) =191a(5) =199a(6) =811a(7) =881a(8) =911a(9) =919a(10) =991a(11) =1181a(12) =1811a(13) =1889a(14) =1999a(15) =8111a(16) =8191a(17) =8819a(18) =8999a(19) =9181a(20) =9199a(21) =9811a(22) =11119a(23) =11981a(24) =18119a(25) =18181a(26) =18191a(27) =18199a(28) =18899a(29) =18911