A020468 -id:A020468 - cp's OEIS frontend

A036947 Smallest n-digit prime containing only the digits 5 and 9, or 0 if no such prime exists.

5, 59, 599, 0, 59999, 599959, 5595559, 55555559, 555555599, 5555555959, 55555595999, 555555555559, 5555555599999, 55555555595599, 555555555995959, 5555555555559959, 55555555555555999, 555555555555555559

Offset: 1

Patrick De Geest, Jan 04 1999

Jinyuan Wang, Table of n, a(n) for n = 1..500

Cf. A020468, A036229, A036321.

A386353 Primes without {5, 9} as digits.

Original entry on oeis.org

2, 3, 7, 11, 13, 17, 23, 31, 37, 41, 43, 47, 61, 67, 71, 73, 83, 101, 103, 107, 113, 127, 131, 137, 163, 167, 173, 181, 211, 223, 227, 233, 241, 263, 271, 277, 281, 283, 307, 311, 313, 317, 331, 337, 347, 367, 373, 383, 401, 421, 431, 433, 443, 461, 463, 467

Offset: 1

Jason Bard, Jul 20 2025

Intersection of A038613 and A038617.

Cf. A000040, A020468, A385776.

[p: p in PrimesUpTo(10^6) | Set(Intseq(p)) subset [0, 1, 2, 3, 4, 6, 7, 8]];

Select[Prime[Range[120]], DigitCount[#, 10, 5] == 0 && DigitCount[#, 10, 9] == 0 &]

primes_with(, 1, [0, 1, 2, 3, 4, 6, 7, 8]) \\ uses function in A385776

print(list(islice(primes_with("01234678"), 41))) # uses function/imports in A385776

cp's OEIS Frontend

A036947 Smallest n-digit prime containing only the digits 5 and 9, or 0 if no such prime exists.

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A386353 Primes without {5, 9} as digits.

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Programs

Magma

Mathematica

PARI

Python