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A077534
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Multiples of 4 using only prime digits (2, 3, 5 and 7).
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2
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32, 52, 72, 232, 252, 272, 332, 352, 372, 532, 552, 572, 732, 752, 772, 2232, 2252, 2272, 2332, 2352, 2372, 2532, 2552, 2572, 2732, 2752, 2772, 3232, 3252, 3272, 3332, 3352, 3372, 3532, 3552, 3572, 3732, 3752, 3772, 5232, 5252, 5272, 5332, 5352, 5372
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OFFSET
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1,1
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COMMENTS
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Last digit is 2, next-to-last digit is odd, each remaining digit can be any prime digit.
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LINKS
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MATHEMATICA
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Select[4Range[2000], And@@PrimeQ[IntegerDigits[#]]&] (* Harvey P. Dale, Dec 13 2010 *)
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CROSSREFS
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KEYWORD
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base,nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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