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 A052027 Primes in base 10 that remain primes in seven bases b, 2<=b<=10, expansions interpreted as decimal numbers. 11
 5, 9241, 17791, 330289, 391231, 1005481, 1210483, 2378143, 2469241, 2779939, 2840041, 6817501, 8320831, 9865711, 10871407, 11087191, 12259603, 13645393, 15665833, 16707883, 17694463, 25751863, 27794287, 31488481 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Sebastian Petzelberger, Table of n, a(n) for n = 1..1000 Carlos Rivera, PP&P Puzzle 24: Primes in several bases MATHEMATICA Select[Prime[Range@ 100000], Count[PrimeQ /@ Table[FromDigits[IntegerDigits[#, i]], {i, 2, 10}], True] == 7 &] (* Michael De Vlieger, Mar 21 2015, after Harvey P. Dale at A052032 *) CROSSREFS Cf. A052026, A038537, A052027-A052033, A084482, A236356. Sequence in context: A145530 A067816 A076629 * A109514 A022918 A212617 Adjacent sequences:  A052024 A052025 A052026 * A052028 A052029 A052030 KEYWORD nonn,base AUTHOR Patrick De Geest, Dec 15 1999 EXTENSIONS Missing terms 2378143 and 2469241 added by Sebastian Petzelberger, Mar 21 2015 STATUS approved

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Last modified December 13 20:06 EST 2018. Contains 318087 sequences. (Running on oeis4.)