A087532 Primes consisting only of digits 3 and 8 occurring with equal frequency.

83, 38383883, 88838333, 3338388883, 3388338883, 3388833883, 3388838833, 3833388883, 3838383883, 3838388383, 3838838383, 3838883383, 3883883833, 8333888383, 8338383883, 8338888333, 8383338883, 8383388383, 8383888333, 8388338383, 8388883333, 8833383883

Offset

1,1

Comments

There are 18 digit pairs which can produce such primes. (1,0),(1,3),(1,4),(1,6),(1,7),(1,9),(2,3),(2,9),(3,4),(3,5),(3,7),(3,8),(4,7),(4,9),(5,9),(6,7),(7,9),(8,9).

Links

Andrew Howroyd, Table of n, a(n) for n = 1..5182

Prog

(PARI) \\ Needs B() from A087510.
concat(vector(6, k, B(k, 3, 8, isprime))) \\ Andrew Howroyd, Sep 20 2024

Crossrefs

Cf. A087510, A087511, A087531.

Sequence in context: A201727 A116263 A287686 * A116307 A093676 A221416

Adjacent sequences: A087529 A087530 A087531 * A087533 A087534 A087535

Keyword

base,nonn

Author

Amarnath Murthy and Paul D. Hanna, Sep 12 2003

Extensions

Edited by Charles R Greathouse IV, Oct 28 2009

Offset changed and a(20) onwards from Andrew Howroyd, Sep 20 2024

Status

approved