|
|
A214837
|
|
Primes not expressible as the sum of a prime and its digit sum.
|
|
0
|
|
|
2, 3, 5, 7, 11, 19, 23, 31, 37, 41, 43, 53, 59, 67, 71, 89, 97, 101, 109, 127, 131, 139, 149, 151, 157, 167, 179, 193, 197, 199, 211, 223, 227, 229, 233, 239, 251, 257, 263, 269, 277, 283, 311, 313, 331, 337, 347, 349, 353, 359, 367, 373, 379, 389, 401, 419
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
|
|
LINKS
|
|
|
EXAMPLE
|
19 is in the list since there exists no prime p such that p+digit sum of p = 19.
|
|
MATHEMATICA
|
primeList = Prime[Range[81]]; Complement[primeList, Sort[Select[Table[p + Total[IntegerDigits[p]], {p, primeList}], PrimeQ]]]
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,base
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|