|
| |
|
|
A062224
|
|
Numbers k such that the smoothly undulating palindromic number (75*10^k - 57)/99 is a prime.
|
|
0
|
|
|
|
3, 17, 77, 143, 149, 513, 1079, 1415, 6249, 13265, 14579, 15293, 41657, 72941
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,1
|
|
|
COMMENTS
|
Prime versus probable prime status and proofs are given in the author's table.
|
|
|
LINKS
|
|
|
|
EXAMPLE
|
k=17 -> (75*10^17 - 57)/99 = 75757575757575757.
|
|
|
CROSSREFS
|
|
|
|
KEYWORD
|
nonn,base,more
|
|
|
AUTHOR
|
Patrick De Geest and Hans Rosenthal (Hans.Rosenthal(AT)t-online.de), Jun 15 2001
|
|
|
EXTENSIONS
|
|
|
|
STATUS
|
approved
|
| |
|
|
