A077536 Multiples of 7 using only prime digits (2, 3, 5 and 7).

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

Author

Amarnath Murthy, Nov 08 2002

Keywords

• base
• nonn

Crossrefs

Cf. A077533, A077534, A077535.

Programs

Mathematica

Select[7*Range[1100],And@@PrimeQ[IntegerDigits[#]]&] (* Harvey P. Dale, Jul 18 2011 *)

Extensions

Corrected and extended by Sascha Kurz, Jan 03 2003