Primes whose digits are composite; primes having only {4, 6, 8, 9} as digits.

Terms

a(0) =89a(1) =449a(2) =499a(3) =4649a(4) =4889a(5) =4969a(6) =4999a(7) =6449a(8) =6469a(9) =6689a(10) =6869a(11) =6899a(12) =6949a(13) =8669a(14) =8689a(15) =8699a(16) =8849a(17) =8969a(18) =8999a(19) =9649a(20) =9689a(21) =9949a(22) =44449a(23) =44699a(24) =46489a(25) =46499a(26) =46649a(27) =46889a(28) =48449a(29) =48649