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A215927 Primes having at least one digit that is not prime. 1
11, 13, 17, 19, 29, 31, 41, 43, 47, 59, 61, 67, 71, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 229, 239, 241, 251, 263, 269, 271, 281, 283, 293, 307, 311, 313, 317, 331, 347 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Complement of A019546 within the primes A000040.

LINKS

Table of n, a(n) for n=1..55.

EXAMPLE

19 is in the sequence because neither of its two digits is prime, 1 being a unit and 9 being the square of 3.

23 is not in the sequence because both 2 and 3 are prime.

29 is in the sequence because 9 is not prime (though 2 is).

MATHEMATICA

Select[Prime[Range[100]], Complement[IntegerDigits[#], {2, 3, 5, 7}] != {} &] (* Alonso del Arte, Aug 27 2012 *)

PROG

(PARI) is_A215927(n)=isprime(n)&apply(x->!isprime(x), eval(Vec(Str(n)))) \\ - M. F. Hasler, Aug 27 2012

(MAGMA) [p: p in PrimesUpTo(500) | not Set(Intseq(p)) subset [2, 3, 5, 7]]; // Vincenzo Librandi Oct 25 2016

CROSSREFS

Cf. A034844, A033274, A152313, A141409.

Sequence in context: A103900 A097358 A230462 * A229947 A132247 A186811

Adjacent sequences:  A215924 A215925 A215926 * A215928 A215929 A215930

KEYWORD

nonn,base

AUTHOR

Luca Brigada Villa, Aug 27 2012

EXTENSIONS

a(55) corrected by Vincenzo Librandi_, Oct 25 2016

STATUS

approved

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Last modified May 28 10:34 EDT 2017. Contains 287240 sequences.