A104949 Primes from merging of 6 successive digits in decimal expansion of the Champernowne Constant.

789101, 728293, 869707, 889909, 102103, 108109, 911011, 101111, 111121, 111211, 711811, 120121, 201211, 231241, 251261, 126127, 261271, 281291, 913013, 113213, 321331, 351361, 138139, 401411, 411421, 431441, 471481, 491501, 150151, 501511

Offset

1,1

Comments

Initial zeros are not permitted, i.e., the resulting primes must be six digits in length. - Harvey P. Dale, Jul 18 2011

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

The first 2,800 digits of the Champernowne Constant as calculated at WorldWideSchool.org.

Mathematica

Select[Select[FromDigits/@Partition[Flatten[IntegerDigits/@Range[500]], 6, 1], PrimeQ], IntegerLength[#]==6&] (* Harvey P. Dale, Jul 18 2011 *)

Crossrefs

Cf. A007376, A033307.

Sequence in context: A175747 A355707 A115175 * A237895 A187295 A234244

Adjacent sequences: A104946 A104947 A104948 * A104950 A104951 A104952

Keyword

nonn,base

Author

Andrew G. West (WestA(AT)wlu.edu), Mar 29 2005

Status

approved