The OEIS is supported by the many generous donors to the OEIS Foundation.

 Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 59th year, we have over 358,000 sequences, and we’ve crossed 10,300 citations (which often say “discovered thanks to the OEIS”). Other ways to Give
 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A087764 Primes whose reversal is a multiple of 13. 10
 19, 31, 269, 281, 397, 401, 457, 463, 523, 773, 827, 1063, 1117, 1123, 1367, 1373, 1427, 1433, 1489, 1549, 1609, 1621, 1871, 1931, 1987, 1993, 2027, 2089, 2161, 2221, 2399, 2459, 2531, 2593, 2647, 2707, 2713 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS There are no primes (besides 11) whose reversal is a multiple of 11. LINKS Robert Israel, Table of n, a(n) for n = 1..10000 MAPLE digrev:= proc(n) local L, i; L:= convert(n, base, 10); add(L[-i]*10^(i-1), i=1..nops(L)) end proc: B:= map(digrev, {seq(i, i=13..10000, 13)}): sort(convert(select(isprime, B), list)); # Robert Israel, Oct 23 2019 PROG (PARI) forprime(n=2, 3000, if(fromdigits(Vecrev(digits(n)))%13==0, print1(n, ", "))) \\ Mohammed Yaseen, Jul 19 2022 CROSSREFS Primes whose reversal is a multiple of k: A087762 (k=7), this sequence (k=13), A087765 (k=17), A087766 (k=19), A087767 (k=23). Sequence in context: A240126 A125602 A139847 * A146691 A146784 A147240 Adjacent sequences: A087761 A087762 A087763 * A087765 A087766 A087767 KEYWORD easy,nonn,base AUTHOR Zak Seidov, Oct 03 2003 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified November 30 08:36 EST 2022. Contains 358438 sequences. (Running on oeis4.)