A089743 Numbers that are the leading digits of a palindromic prime.

1, 2, 3, 5, 7, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118

Offset: 1

Author

Amarnath Murthy, Nov 19 2003

Keywords

• base
• easy
• nonn

Comments

Conjecture: every number beginning with 1, 3, 7 or 9 begins infinitely many palindromic primes.

Crossrefs

Cf. A082768, A089744.

Extensions

Edited and extended by David Wasserman, Jul 28 2005