A024773 Every prefix and suffix prime in base 5 (written in base 5).

2, 3, 23, 32, 232

Offset

1,1

Comments

Primes that are both left-truncatable and right-truncatable in base 5.

Links

Table of n, a(n) for n=1..5.

Example

The prime 67 is 232 in base 5. Truncating on the left, we obtain 32 (which is 17 in base 10) and 2, both of which are prime. Truncating on the right, we obtain 23 (which is 13 in base 10) and 2 again. Therefore 232 is in the sequence.

Crossrefs

Sequence in context: A328940 A024764 A213971 * A176892 A109615 A101001

Adjacent sequences: A024770 A024771 A024772 * A024774 A024775 A024776

Keyword

nonn,base,fini,full

Author

David W. Wilson

Status

approved