|
| |
|
|
A006034
|
|
Numbers n such that (17^n-1)/16 is prime.
(Formerly M2415)
|
|
15
| |
|
|
3, 5, 7, 11, 47, 71, 419, 4799, 35149, 54919, 74509
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,1
|
|
|
COMMENTS
| No others for any n less than 8447. - Julien Peter Benney (jpbenney(AT)ftml.net), Aug 15 2004
|
|
|
REFERENCES
| H. Dubner, Generalized repunit primes, Math. Comp., 61 (1993), 927-930.
Ribenboim, Paulo; "The Book Of Prime Number Records"; published 1989 by Springer-Verlag; pages 350-354.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
|
|
|
LINKS
| H. Lifchitz, Mersenne and Fermat primes field
|
|
|
MATHEMATICA
| lst={}; Do[If[PrimeQ[(17^n-1)/16], Print[n]; AppendTo[lst, n]], {n, 10^5}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Aug 21 2008]
|
|
|
PROG
| (Other) PFGW v3.3.1 [From Paul Bourdelais (pbourdelais(AT)radiantblue.com), Mar 10 2010]
|
|
|
CROSSREFS
| Sequence in context: A061245 A137355 A147143 * A083840 A088051 A159471
Adjacent sequences: A006031 A006032 A006033 * A006035 A006036 A006037
|
|
|
KEYWORD
| hard,nonn
|
|
|
AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
|
|
|
EXTENSIONS
| a(9)=35149 & a(10)=54919 are probable primes discovered by Paul Bourdelais (pbourdelais(AT)radiantblue.com), Mar 08 2010
a(11)=74509 is a probable prime discovered by Paul Bourdelais (pbourdelais(AT)radiantblue.com), Mar 10 2010
|
| |
|
|
