A386074 Primes having only {0, 4, 7, 8} as digits.
7, 47, 487, 787, 877, 887, 4007, 4447, 4787, 4877, 7477, 7487, 7877, 8087, 8447, 8707, 8747, 8807, 8887, 40087, 40487, 40787, 40847, 44087, 44777, 44887, 47087, 47407, 47777, 47807, 48407, 48487, 48787, 48847, 70487, 70877, 74047, 74077, 74707, 74747, 74887, 77047
Offset: 1