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A128390
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Emirps with only nonprime digits (i.e., 0, 1, 4, 6, 8, 9).
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6
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149, 199, 941, 991, 1009, 1061, 1069, 1091, 1109, 1181, 1409, 1499, 1601, 1619, 1669, 1811, 1901, 1949, 9001, 9011, 9041, 9161, 9491, 9601, 9661, 9941, 10009, 10061, 10069, 10091, 10499, 10889, 10891, 10909, 11149, 11161, 11489, 11699, 11909
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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LINKS
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MATHEMATICA
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Select[Prime@Range@(10^4), (r = IntegerReverse@#) != # && PrimeQ@r && Intersection[IntegerDigits@#, {2, 3, 5, 7}] == {} &] (* Ray Chandler, Mar 06 2007 corrected by Hans Rudolf Widmer, May 18 2024 *)
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CROSSREFS
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KEYWORD
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nonn,less,base
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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