

A084375


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


0



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
(list;
graph;
refs;
listen;
history;
text;
internal format)



OFFSET

1,1


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.


LINKS

Table of n, a(n) for n=1..49.


MATHEMATICA

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.
Sequence in context: A084799 A166136 A120154 * A076674 A176062 A027571
Adjacent sequences: A084372 A084373 A084374 * A084376 A084377 A084378


KEYWORD

nonn,base


AUTHOR

Zak Seidov, Jun 23 2003


EXTENSIONS

Definition corrected by Harvey P. Dale, Jun 20 2011


STATUS

approved



