A084375 Indices of primes which remain prime if any one digit is deleted (leading zeros allowed).

9, 12, 16, 21, 30, 32, 33, 40, 41, 45, 64, 66, 83, 113, 128, 170, 173, 184, 239, 302, 333, 341, 446, 555, 657, 804, 903, 942, 1194, 1252, 1295, 1345, 2258, 2652, 2943, 3246, 3926, 4205, 4939, 7243, 7318, 8716, 8864, 9028, 9103, 10594, 15249, 28712, 30451

Offset: 1

Author

Zak Seidov, Jun 23 2003

Keywords

• nonn
• base

Comments

Primes of this kind (with and without leading zeros) are in A051362 and A034302. Here more terms are given and question is asked: is this sequence finite? From first 1,000,000 primes only 77 are of this kind.

Examples

			The 41st prime is 179, and 17, 19, and 79 are all primes, so 41 is in the sequence. - _Harvey P. Dale_, Jun 20 2011
		

Crossrefs

Cf. A034302, A051362.

Extensions

Definition corrected by Harvey P. Dale, Jun 20 2011