cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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A082717 Numbers k such that (82*10^(k-1) + 71)/9 is a depression prime.

Original entry on oeis.org

3, 247, 1141, 10395, 43881
Offset: 1

Views

Author

Patrick De Geest, Apr 13 2003

Keywords

Comments

Prime versus probable prime status and proofs are given in the author's table.

Examples

			k=3 -> (82*10^(3-1) + 71)/9 = 919.

References

  • C. Caldwell and H. Dubner, "Journal of Recreational Mathematics", Volume 28, No. 1, 1996-97, pp. 1-9.

Links

Crossrefs

Cf. A082697-A082720, A056264.

Extensions

One more term from Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 02 2008
Edited by Ray Chandler, Nov 04 2014

A082710 Numbers k such that (64*10^(k-1) + 53)/9 is a depression prime.

Original entry on oeis.org

10907, 499211
Offset: 1

Views

Author

Patrick De Geest, Apr 13 2003

Keywords

Comments

Prime versus probable prime status and proofs are given in the author's table.
Searched up to k=1200000 by Serge Batalov, Mar 02 2015

Examples

			a(1)=10907 -> (64*10^(10907-1) + 53)/9 = 7111...1117 or 10905 1's surrounded by two 7's.

References

  • C. Caldwell and H. Dubner, "Journal of Recreational Mathematics", Volume 28, No. 1, 1996-97, pp. 1-9.

Links

Crossrefs

Cf. A082697-A082720.

Extensions

Edited by Ray Chandler, Nov 05 2014
Additional PRP term 499211 by Serge Batalov, Mar 01 2015
Previous Showing 21-22 of 22 results.

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