Primes having only {2, 3, 5, 6} as digits.

Terms

a(0) =2a(1) =3a(2) =5a(3) =23a(4) =53a(5) =223a(6) =233a(7) =263a(8) =353a(9) =523a(10) =563a(11) =653a(12) =2333a(13) =2633a(14) =2663a(15) =3253a(16) =3323a(17) =3533a(18) =3623a(19) =5233a(20) =5323a(21) =5333a(22) =5563a(23) =5623a(24) =5653a(25) =6263a(26) =6323a(27) =6353a(28) =6553a(29) =6563