First of three consecutive primes whose concatenations, both forward and backward, are primes.
A384953
First of three consecutive primes whose concatenations, both forward and backward, are primes.
Terms
- a(0) =313a(1) =359a(2) =383a(3) =449a(4) =619a(5) =787a(6) =827a(7) =907a(8) =1697a(9) =2503a(10) =2521a(11) =2857a(12) =3673a(13) =3853a(14) =4139a(15) =4363a(16) =4993a(17) =5281a(18) =5527a(19) =5563a(20) =5641a(21) =5851a(22) =6037a(23) =6043a(24) =6719a(25) =7019a(26) =7477a(27) =9281a(28) =10177a(29) =10459
External references
- oeis: A384953