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A107666 Primes with semiprime digits (digits 4, 6, 9 only). 8
449, 499, 4649, 4969, 4999, 6449, 6469, 6949, 9649, 9949, 44449, 44699, 46499, 46649, 49499, 49669, 49999, 64499, 64969, 66449, 66499, 66949, 69499, 94649, 94949, 94999, 96469, 99469, 444449, 444469, 444649, 446969, 449699, 464699 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..34.

CROSSREFS

Cf. A107665 (numbers with semiprime digits), A001358 (semiprimes), A051416 (primes whose digits are all composite), A020466 (primes with digits 4 and 9 only), A093402 (primes of form 44...9), A093945 (primes of form 499...).

Cf. A107342, A111494, A111496, A111697.

Sequence in context: A174154 A071104 A087700 * A020466 A142420 A105376

Adjacent sequences:  A107663 A107664 A107665 * A107667 A107668 A107669

KEYWORD

base,nonn

AUTHOR

Rick L. Shepherd, May 19 2005

STATUS

approved

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Last modified July 28 16:32 EDT 2014. Contains 245003 sequences.