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A024773 Every prefix and suffix prime in base 5 (written in base 5). 1
2, 3, 23, 32, 232 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Primes that are both left-truncatable and right-truncatable in base 5.
LINKS
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
KEYWORD
nonn,base,fini,full
AUTHOR
STATUS
approved

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Last modified May 26 19:46 EDT 2024. Contains 372844 sequences. (Running on oeis4.)