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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

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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