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A173767
Primes p such that (53^p - 1)/52 is also prime.
1
11, 31, 41, 1571, 25771, 181981
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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
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Last modified August 30 02:56 EDT 2024. Contains 375521 sequences. (Running on oeis4.)