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A104912 Numbers k such that the string 9876543210k is prime. 2
29, 47, 61, 89, 97, 217, 229, 299, 361, 379, 389, 419, 461, 463, 467, 533, 637, 643, 649, 701, 707, 733, 749, 769, 791, 847, 869, 923, 943, 949, 997, 1067, 1103, 1169, 1319, 1327, 1361, 1439, 1451, 1481, 1489, 1493, 1517, 1543, 1549, 1579, 1591, 1643, 1681 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
MATHEMATICA
Select[Range[2000], PrimeQ[9876543210*10^IntegerLength[#]+#]&] (* Harvey P. Dale, Jun 22 2024 *)
PROG
(Magma) [ n: n in [1..1750] | IsPrime(Seqint(Intseq(n) cat [0, 1, 2, 3, 4, 5, 6, 7, 8, 9])) ]; // Vincenzo Librandi, Feb 02 2011
CROSSREFS
Sequence in context: A077782 A059414 A110054 * A104913 A225303 A344466
KEYWORD
nonn,base
AUTHOR
Zak Seidov, Mar 29 2005
STATUS
approved

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Last modified July 13 02:14 EDT 2024. Contains 374259 sequences. (Running on oeis4.)