Primes having only {6, 8, 9} as digits.

Terms

a(0) =89a(1) =6689a(2) =6869a(3) =6899a(4) =8669a(5) =8689a(6) =8699a(7) =8969a(8) =8999a(9) =9689a(10) =66889a(11) =68669a(12) =68699a(13) =68899a(14) =69899a(15) =86689a(16) =86869a(17) =86969a(18) =88969a(19) =89669a(20) =89689a(21) =89899a(22) =89989a(23) =96989a(24) =98669a(25) =98689a(26) =98869a(27) =98899a(28) =98999a(29) =99689