Least multiple of prime(n) containing only prime digits (2,3,5,7).

Terms

a(0) =2a(1) =3a(2) =5a(3) =7a(4) =22a(5) =52a(6) =255a(7) =57a(8) =23a(9) =232a(10) =372a(11) =37a(12) =533a(13) =2322a(14) =235a(15) =53a(16) =2537a(17) =732a(18) =335a(19) =355a(20) =73a(21) =237a(22) =332a(23) =2225a(24) =2522a(25) =2222a(26) =2575a(27) =535a(28) =327a(29) =2373