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 A052033 Primes base 10 that are never primes in any smaller base b, 2<=b<10, expansions interpreted as decimal numbers. 21
 263, 269, 347, 397, 431, 461, 479, 499, 569, 599, 607, 677, 683, 719, 769, 797, 821, 929, 941, 1019, 1031, 1049, 1051, 1061, 1069, 1103, 1181, 1223, 1229, 1237, 1297, 1307, 1367, 1399, 1409, 1439, 1453, 1487, 1489, 1523, 1553, 1559, 1571, 1619, 1637 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Sebastian Petzelberger, Table of n, a(n) for n = 1..10000 C. Rivera, PP&P Puzzle 24: Primes in several bases MATHEMATICA Select[Prime[Range@ 265], Count[PrimeQ /@ Table[FromDigits[IntegerDigits[#, i]], {i, 2, 9}], True] == 0 &] (* Michael De Vlieger, Mar 20 2015 after Harvey P. Dale at A052032 *) CROSSREFS Cf. A038537, A052026-A052033, A236174, A236437, A235354, A235377. Sequence in context: A241877 A270752 A224556 * A105008 A180556 A288502 Adjacent sequences:  A052030 A052031 A052032 * A052034 A052035 A052036 KEYWORD nonn,base AUTHOR Patrick De Geest, Dec 15 1999 STATUS approved

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Last modified January 18 16:27 EST 2020. Contains 331011 sequences. (Running on oeis4.)