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A355984 Primes whose reversal is a multiple of 8. 2
23, 61, 211, 251, 257, 293, 401, 409, 443, 449, 487, 631, 673, 677, 821, 823, 827, 829, 863, 2111, 2113, 2131, 2137, 2153, 2179, 2309, 2341, 2347, 2381, 2383, 2389, 2531, 2539, 2551, 2557, 2579, 2591, 2593, 2707, 2729, 2741, 2749, 2767, 2789, 2917, 2939, 2953, 2957 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Subsequence of A355430 and of A355983.
LINKS
EXAMPLE
251 is a term since 251 is prime and 152 = 8 * 19.
MATHEMATICA
Select[Prime[Range[500]], Divisible[IntegerReverse[#], 8] &] (* Amiram Eldar, Jul 25 2022 *)
PROG
(PARI) is(n) = fromdigits(Vecrev(digits(n)))%8 == 0 \\ David A. Corneth, Jul 25 2022
CROSSREFS
Primes whose reversal is a multiple of k: A355430 (k=2), {3} (k=3), A355983 (k=4), A045711 (k=5), A087762 (k=7), this sequence (k=8), {11} (k=11), A087764 (k=13), A087765 (k=17), A087766 (k=19), A087767 (k=23)
Sequence in context: A115685 A069798 A067194 * A355985 A232235 A107692
KEYWORD
nonn,base
AUTHOR
Bernard Schott, Jul 25 2022
EXTENSIONS
More terms from David A. Corneth, Jul 25 2022
STATUS
approved

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Last modified March 1 06:17 EST 2024. Contains 370430 sequences. (Running on oeis4.)