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A240587 Primes p of the form n^2 + 123456789 where 123456789 is the first zeroless pandigital number. 7
123457189, 123459289, 123465253, 123466789, 123470713, 123481753, 123482389, 123486373, 123489913, 123501733, 123505189, 123510613, 123535189, 123545593, 123564373, 123571033, 123584953, 123587833, 123592213, 123610453, 123631513, 123641689, 123657493 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

K. D. Bajpai, Table of n, a(n) for n = 1..1111

EXAMPLE

123457189 is a prime and appears in the sequence because 123457189 = 20^2 + 123456789.

123459289 is a prime and appears in the sequence because 123459289 = 50^2 + 123456789.

MAPLE

KD := proc() local a; a:=n^2+123456789; if isprime(a) then RETURN (a); fi; end: seq(KD(), n=1..1000);

MATHEMATICA

Select[Table[k^2+123456789, {k, 1, 3000}], PrimeQ]

CROSSREFS

Cf. A000040, A002496, A028871, A050289, A056899.

Sequence in context: A288941 A175547 A053654 * A323026 A247187 A147647

Adjacent sequences:  A240584 A240585 A240586 * A240588 A240589 A240590

KEYWORD

nonn,base

AUTHOR

K. D. Bajpai, Apr 08 2014

STATUS

approved

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Last modified September 21 17:46 EDT 2019. Contains 327273 sequences. (Running on oeis4.)