A160337 1 plus primes using only digits {0, 1, 2, 3, 5, 7}.

1, 2, 3, 5, 7, 11, 13, 17, 23, 31, 37, 53, 71, 73, 101, 103, 107, 113, 127, 131, 137, 151, 157, 173, 211, 223, 227, 233, 251, 257, 271, 277, 307, 311, 313, 317, 331, 337, 353, 373, 503, 521, 523, 557, 571, 577, 701, 727, 733, 751, 757, 773, 1013, 1021, 1031

Offset: 1

Author

Mohit Singh Kanwal (mohit_kanwal(AT)hotmail.com), May 10 2009

Keywords

• nonn
• base

Links

• Alois P. Heinz, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A012884, A143390.

Programs

Python

from sympy import isprime
def ok(n): return n == 1 or (set(str(n)) <= set("012357") and isprime(n))
print([m for m in range(1032) if ok(m)]) # Michael S. Branicky, Jan 25 2021