1,1

All palindromic primes have odd number of digits. There are two 3-digit, six 5-digit and 42 7-digit palprimes pp such that 9876543210pp0123456789 is palindromic prime.

Sequence in context: A105837 A142205 A142807 this_sequence A144247 A161197 A104596

Adjacent sequences: A103831 A103832 A103833 this_sequence A103835 A103836 A103837

nonn,base

Zak Seidov (zakseidov(AT)yahoo.com), Mar 30 2005