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A077536
Multiples of 7 using only prime digits (2, 3, 5 and 7).
0
7, 35, 77, 252, 273, 322, 357, 525, 532, 553, 735, 777, 2233, 2275, 2352, 2373, 2527, 2555, 2723, 2737, 2772, 3227, 3255, 3325, 3332, 3353, 3535, 3577, 3752, 3773, 5222, 5257, 5327, 5355, 5523, 5537, 5572, 5733, 5775, 7252, 7273, 7322, 7357, 7525, 7532
OFFSET
0,1
MATHEMATICA
Select[7*Range[1100], And@@PrimeQ[IntegerDigits[#]]&] (* Harvey P. Dale, Jul 18 2011 *)
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Amarnath Murthy, Nov 08 2002
EXTENSIONS
Corrected and extended by Sascha Kurz, Jan 03 2003
STATUS
approved