Larger of emirps (pairs) with a prime number of only prime digits.

Terms

a(0) =73a(1) =733a(2) =33223a(3) =35323a(4) =72253a(5) =72353a(6) =73327a(7) =73523a(8) =73553a(9) =75223a(10) =75253a(11) =77237a(12) =77323a(13) =77527a(14) =77557a(15) =3235223a(16) =3353323a(17) =3375233a(18) =3527233a(19) =3532733a(20) =3573523a(21) =3573733a(22) =3575333a(23) =3733333a(24) =3735233a(25) =3735353a(26) =3753353a(27) =3755273a(28) =3755333