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A104950
Primes from merging of 7 successive digits in decimal expansion of the Champernowne Constant.
1
4567891, 1112131, 1213141, 8394041, 4757677, 8798081, 8991001, 1111211, 1112113, 1211311, 1711811, 7118119, 3113213, 3413513, 5146147, 7148149, 9170171, 7417517, 7517617, 8919019, 9119219, 5196197, 7198199, 5206207
OFFSET
1,1
LINKS
The first 2,800 digits of the Champernowne Constant as calculated at WorldWideSchool.org.
MATHEMATICA
Select[Select[FromDigits/@Partition[Flatten[IntegerDigits/@Range[300]], 7, 1], PrimeQ], IntegerLength[#] == 7&] (* Vincenzo Librandi, Apr 24 2013 *)
CROSSREFS
Cf. A033307.
Sequence in context: A234793 A227040 A227039 * A234806 A152964 A129931
KEYWORD
nonn,base
AUTHOR
Andrew G. West (WestA(AT)wlu.edu), Mar 29 2005
EXTENSIONS
Changed offset from 0 to 1 by Vincenzo Librandi, Apr 24 2013
STATUS
approved