A173767 Primes p such that (53^p - 1)/52 is also prime.

11, 31, 41, 1571, 25771, 181981

Offset

1,1

Links

Table of n, a(n) for n=1..6.

R. Fischer, Generalized repunit primes of the form (B^N-1)/(B-1)

Crossrefs

Sequence in context: A138656 A144234 A109548 * A347815 A142343 A271653

Adjacent sequences: A173764 A173765 A173766 * A173768 A173769 A173770

Keyword

nonn,more

Author

Vincenzo Librandi, Mar 05 2010

Extensions

Partially checked by Michael B. Porter, Jun 16 2010

a(5)-a(6) from R. Fischer's webpage added by Max Alekseyev, Aug 26 2023

Status

approved