A082698 Numbers k such that (13*10^(k-1) - 31)/9 is a plateau prime.
7, 67, 1255, 8407, 67039
Offset: 1
Examples
k=7 -> (13*10^(7-1) - 31)/9 = 1444441.
References
- C. Caldwell and H. Dubner, "Journal of Recreational Mathematics", Volume 28, No. 1, 1996-97, pp. 1-9.
Links
- Patrick De Geest, PDP Reference Table - 141.
- Makoto Kamada, Prime numbers of the form 144...441.
- Index entries for primes involving repunits.
Formula
a(n) = A056245(n+1) + 2.
Extensions
A new PRP term from Serge Batalov, Nov 02 2008
Edited by Ray Chandler, Nov 04 2014
Comments