|
Search: id:A058997
|
|
|
| A058997 |
|
Least power k greater than 1 for which n^k reversed is a prime, or 0 if impossible. |
|
+0
1
|
|
| 0, 4, 0, 2, 3, 0, 12, 8, 0, 0, 0, 0, 379, 2, 0, 6, 11, 0, 2, 0, 0, 0, 8, 0, 13, 47, 0, 2, 7, 0, 4, 2, 0
(list; graph; listen)
|
|
|
OFFSET
|
1,2
|
|
|
MATHEMATICA
|
Do[ If[ Mod[ n, 3 ] != 0 && Mod[ n, 10 ] != 0 && Mod[ n, 11 ] != 0, k = 2; While[ !PrimeQ[ ToExpression[ StringReverse[ ToString[ n^k ] ] ] ], k++ ]; Print[ k ], Print[ 0 ] ], {n, 2, 33} ]
|
|
CROSSREFS
|
Sequence in context: A090538 A109157 A123314 this_sequence A145894 A021881 A021717
Adjacent sequences: A058994 A058995 A058996 this_sequence A058998 A058999 A059000
|
|
KEYWORD
|
base,nonn
|
|
AUTHOR
|
Robert G. Wilson v (rgwv(AT)rgwv.com), Jan 17 2001
|
|
|
Search completed in 0.002 seconds
|
