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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

Complement of A048520.

LINKS

Table of n, a(n) for n=1..56.

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

Cf. A006378, A048520.

Sequence in context: A246044 A039986 A278694 * A079346 A228062 A059878

Adjacent sequences:  A214834 A214835 A214836 * A214838 A214839 A214840

KEYWORD

nonn,base

AUTHOR

Jayanta Basu, May 03 2013

STATUS

approved

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Last modified January 17 09:45 EST 2018. Contains 297815 sequences.