A386072 Primes having only {0, 4, 6, 7} as digits.
7, 47, 67, 467, 607, 647, 677, 4007, 4447, 6007, 6047, 6067, 6607, 7477, 7607, 44647, 44777, 46447, 46477, 46747, 47407, 47777, 60077, 60607, 60647, 64007, 64067, 64667, 64747, 66047, 66067, 66467, 67447, 67477, 67607, 67777, 70067, 70607, 70667, 74047, 74077
Offset: 1