|
|
A086259
|
|
Primes with at least four digits such that sum of any three_neighbor_digits is prime; first and last digits are neighbors.
|
|
1
|
|
|
1151, 1193, 1319, 1373, 1511, 1733, 1913, 1931, 1973, 2003, 3119, 3137, 3191, 3371, 3559, 3719, 3779, 3797, 3911, 3917, 5953, 7193, 7331, 7793, 7937, 9137, 9173, 9311, 9371, 9377, 10111, 11113, 11119, 11131, 11311, 11551, 13313, 13913, 15511, 19139, 19319
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
Because 3-digit terms coincide with additive 3-dimensional primes A046713, it is interesting to start with 4-digit primes. All of them may use only zero and odd digits, with the unique exclusion 2003 with one even digit. Primes such that sum of any two_neighbor_digits is prime A086244.
|
|
LINKS
|
Alois P. Heinz, Table of n, a(n) for n = 1..10000
Zak Seidov, Prime sum of three neighbor digits.
Zak Seidov, Prime sum of three neighbor digits, message 12962 in primenumbers Yahoo group, Jul 14, 2003. [Cached copy]
|
|
EXAMPLE
|
1973 is a term because 1+9+7=17, 9+7+3=19, 7+3+1=11 and 3+1+9=13 are all prime.
|
|
CROSSREFS
|
Cf. A086244, A046713.
Sequence in context: A233944 A329520 A054999 * A345472 A175606 A179036
Adjacent sequences: A086256 A086257 A086258 * A086260 A086261 A086262
|
|
KEYWORD
|
nonn,base
|
|
AUTHOR
|
Zak Seidov, Jul 26 2003
|
|
EXTENSIONS
|
More terms from Alois P. Heinz, May 10 2016
|
|
STATUS
|
approved
|
|
|
|