Smaller of a pair of consecutive primes having only prime digits.

Terms

a(0) =2a(1) =3a(2) =5a(3) =223a(4) =727a(5) =3253a(6) =3727a(7) =5233a(8) =5323a(9) =7573a(10) =7723a(11) =7753a(12) =22273a(13) =23327a(14) =25523a(15) =27733a(16) =32233a(17) =32323a(18) =32533a(19) =35323a(20) =35533a(21) =37253a(22) =37273a(23) =52223a(24) =52727a(25) =53323a(26) =53327a(27) =53773a(28) =55333a(29) =72223