A199329 Primes having only {0, 1, 9} as digits.

11, 19, 101, 109, 191, 199, 911, 919, 991, 1009, 1019, 1091, 1109, 1901, 1999, 9001, 9011, 9091, 9109, 9199, 9901, 10009, 10091, 10099, 10111, 10909, 11119, 11909, 19001, 19009, 19919, 19991, 90001, 90011, 90019, 90191, 90199, 90901, 90911, 91009, 91019, 91099, 91199, 91909, 99109, 99119, 99191, 99901, 99991

Offset: 1

Author

M. F. Hasler, Nov 05 2011

Keywords

• nonn
• base

Links

• Alois P. Heinz, Table of n, a(n) for n = 1..10000
• Index to entries about primes with digits in a given set

Crossrefs

Cf. A020449 - A020472, A036953, A260044, A260267 - A260271, A199325 - A199327, A061247, A199340 - A199349.

Programs

Mathematica

Select[FromDigits/@Tuples[{0,1,9},5],PrimeQ] (* Harvey P. Dale, Dec 10 2016 *)

PARI

A199329(n=50,show=0,L=[0,1,9])={for(d=1,1e9,my(t,u=vector(d,i,10^(d-i))~);forvec(v=vector(d,i,[1+!(L[1]||(i>1&&iM. F. Hasler, Jul 25 2015