A385771 Primes having only {0, 7, 8} as digits.

7, 787, 877, 887, 7877, 8087, 8707, 8807, 8887, 70877, 78007, 78707, 78787, 78877, 78887, 80077, 80777, 87877, 87887, 88007, 88807, 700087, 700877, 707887, 708007, 777787, 777877, 778777, 780707, 780877, 780887, 787777, 787807, 788077, 788087, 800077

Offset: 1

Author

Jason Bard, Jul 09 2025

Keywords

• nonn
• base
• easy

Examples

			7877 is a term because it is prime and only has {0,7,8} as digits.
		

Links

• Jason Bard, Table of n, a(n) for n = 1..10000
• Index to entries for primes with digits in a given set

Crossrefs

Subsequence of A030432.

Cf. A000040, A020470, A385776.

Programs

Magma

[p: p in PrimesUpTo(10^6) | Set(Intseq(p)) subset [0, 7, 8]];

Mathematica

Select[FromDigits/@Tuples[{0,7,8},5],PrimeQ]

PARI

primes_with(, 1, [0, 7, 8]) \\ uses function in A385776

Python

print(list(islice(primes_with("078"), 41))) # uses function/imports in A385776