login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A062666
Numbers k such that 100^k - 99^k is prime.
89
2, 5, 19, 59, 1013, 2371, 13967, 44683
(
list
;
graph
;
refs
;
listen
;
history
;
text
;
internal format
)
OFFSET
1,1
COMMENTS
Terms > 1000 correspond to probable primes.
a(9) > 10^5. -
Robert Price
, Jul 10 2013
LINKS
Table of n, a(n) for n=1..8.
MATHEMATICA
lst={}; k=100; Do[If[PrimeQ[k^n-(k-1)^n], Print[n]; AppendTo[lst, n]], {n, 10^5}]; lst (*
Vladimir Joseph Stephan Orlovsky
, Aug 26 2008 *)
PROG
(PARI) forprime(p=2, 1e5, if(ispseudoprime(100^p-99^p), print1(p", "))) \\
Charles R Greathouse IV
, Jun 10 2011
CROSSREFS
Cf.
A000043
,
A057468
,
A059801
,
A059802
,
A062572
-
A062665
.
Sequence in context:
A215169
A072468
A148430
*
A148431
A321006
A320276
Adjacent sequences:
A062663
A062664
A062665
*
A062667
A062668
A062669
KEYWORD
nonn
,
hard
AUTHOR
Mike Oakes
, May 18 2001, May 19 2001
EXTENSIONS
Edited by
T. D. Noe
, Oct 30 2008
a(7)-a(8) from
Robert Price
, Jul 10 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 March 29 09:14 EDT 2024. Contains 371268 sequences. (Running on oeis4.)