|
|
A083973
|
|
Smallest palindromic prime containing exactly n 2's.
|
|
10
|
|
|
2, 12421, 72227, 1221221, 3222223, 122232221, 322222223, 12222122221, 1202222222021, 1222227222221, 9222222222229, 122222232222221, 32222322222322223, 72222222422222227, 1202222222222222021, 1222222226222222221, 125222222222222222521, 722222222202222222227
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
LINKS
|
|
|
MATHEMATICA
|
Table[d = 2; i = 1;
While[ x = IntegerDigits[Prime[i]];
x != Reverse[x] || Count[x, d] != n , i++];
|
|
CROSSREFS
|
|
|
KEYWORD
|
base,nonn
|
|
AUTHOR
|
Amarnath Murthy and Meenakshi Srikanth (menakan_s(AT)yahoo.com), May 21 2003
|
|
EXTENSIONS
|
|
|
STATUS
|
approved
|
|
|
|