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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 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

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