A057878 Primes with 2 distinct digits that remain prime (no leading zeros allowed) after deleting all occurrences of its digits d.

23, 37, 53, 73, 113, 131, 151, 211, 311, 11111111111111111131, 11111111111111117111, 11111111111131111111, 11111111131111111111, 111111111111111111111113, 111111111111111112111111, 111111111111111121111111, 111111111112111111111111, 111111115111111111111111

Offset: 1

Author

Patrick De Geest, Oct 15 2000

Keywords

• nonn
• base

Comments

Digits 0, 4, 6, 8, and 9 can never occur; digits 2, 3, 5, 7 can occur at most once in a term; every other digit is a 1. - Sean A. Irvine, Jul 11 2022

Crossrefs

Cf. A057876-A057883, A004022, A004023, A051362, A034302-A034305.

Extensions

More terms from Sean A. Irvine, Jul 11 2022