The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A062626 Numbers k such that 60^k - 59^k is prime. 0
4663, 8839, 14779 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Terms greater than 1000 often correspond only to strong pseudoprimes. [Clarified by M. F. Hasler, Sep 15 2013]
a(4) > 10^5. - Robert Price, Mar 01 2013
LINKS
H. Lifchitz, R. Lifchitz, PRP top records (of the form 60^n-59^n)
PROG
(PARI) is(n)=ispseudoprime(60^n-59^n) \\ Charles R Greathouse IV, Jun 13 2017
CROSSREFS
Sequence in context: A159220 A020422 A048131 * A204489 A252127 A188364
KEYWORD
nonn,hard,bref
AUTHOR
Mike Oakes, May 18 2001, May 19 2001
EXTENSIONS
a(3) from Robert Price, Mar 01 2013
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 28 16:19 EDT 2024. Contains 372916 sequences. (Running on oeis4.)