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A199329 Primes with digits '0', '1' and '9' only. 18
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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..49.

PROG

(PARI) a(n=50, L=[0, 1, 9], show=0)={my(t); for(d=1, 1e9, u=vector(d, i, 10^(d-i))~; forvec(v=vector(d, i, [1+(i==1&!L[1]), #L]), ispseudoprime(t=vector(d, i, L[v[i]])*u)|next; show&print1(t", "); n--|return(t)))}

CROSSREFS

Cf. A020449 - A020472, A199325 - A199327.

Sequence in context: A199338 A043188 A043968 * A121132 A238332 A089773

Adjacent sequences:  A199326 A199327 A199328 * A199330 A199331 A199332

KEYWORD

nonn,base

AUTHOR

M. F. Hasler, Nov 05 2011

STATUS

approved

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Last modified August 2 04:08 EDT 2014. Contains 245138 sequences.