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 A153640 Primes made up of a nonprime number of only nonprime digits. 0
 1009, 1019, 1049, 1061, 1069, 1091, 1109, 1181, 1409, 1481, 1489, 1499, 1601, 1609, 1619, 1669, 1699, 1801, 1811, 1861, 1889, 1901, 1949, 1999, 4001, 4019, 4049, 4091, 4099, 4111, 4409, 4441, 4481, 4649, 4691, 4801, 4861, 4889, 4909, 4919, 4969, 4999, 6011 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS There are no one-digit terms, 106 four-digit terms, 2493 six-digit terms, 65989 eight-digit terms, and 350408 nine-digit terms. Of course, there are many more terms of greater-than-9-digit length. - Harvey P. Dale, Aug 24 2017 LINKS Table of n, a(n) for n=1..43. MATHEMATICA Select[FromDigits/@Tuples[{0, 1, 4, 6, 8, 9}, 4], IntegerLength[#]==4&&PrimeQ[#]&] (* Harvey P. Dale, Aug 24 2017 *) CROSSREFS A034844 Sequence in context: A145235 A210759 A171119 * A139665 A261405 A325090 Adjacent sequences: A153637 A153638 A153639 * A153641 A153642 A153643 KEYWORD nonn,base AUTHOR Lekraj Beedassy, Dec 29 2008 EXTENSIONS Corrected by Harvey P. Dale, Aug 24 2017 STATUS approved

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Last modified June 9 09:54 EDT 2023. Contains 363178 sequences. (Running on oeis4.)