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A117702
Palindromic primes in base 7 (written in base 7).
3
2, 3, 5, 131, 212, 313, 515, 535, 616, 10301, 10501, 11111, 12521, 13531, 14141, 15151, 15551, 16361, 20302, 21512, 22322, 22522, 23132, 24542, 25352
OFFSET
1,1
LINKS
Eric Weisstein: Palindromic Prime.
MATHEMATICA
pal7Q[n_]:=Module[{idn7=IntegerDigits[n, 7]}, idn7==Reverse[idn7]]; FromDigits[ IntegerDigits[#, 7]]&/@Select[Prime[Range[1000]], pal7Q] (* Harvey P. Dale, Aug 21 2021 *)
CROSSREFS
Cf. A029975.
Sequence in context: A321362 A230372 A234900 * A041343 A229349 A160600
KEYWORD
nonn,base
AUTHOR
Martin Renner, Apr 13 2006
STATUS
approved