A235640 Primes p of the form n^2 + 1234567890 where 1234567890 is the first pandigital number with digits in order.

1234567891, 1234568059, 1234569571, 1234574779, 1234576171, 1234579771, 1234592539, 1234595779, 1234609099, 1234625011, 1234625971, 1234634971, 1234647979, 1234669651, 1234692499, 1234743451, 1234753651, 1234769491, 1234780411, 1234900819, 1234948579

Offset

1,1

Links

K. D. Bajpai, Table of n, a(n) for n = 1..6694

Example

1234567891 is a prime and appears in the sequence because 1234567891 = 1^2 + 1234567890.
1234568059 is a prime and appears in the sequence because 1234568059 = 13^2 + 1234567890.

Maple

KD := proc() local a; a:=n^2+1234567890; if isprime(a) then RETURN (a); fi; end: seq(KD(), n=1..2000);

Mathematica

Select[Table[k^2+1234567890, {k, 1, 2000}], PrimeQ]
c=0; a=n^2+1234567890; Do[If[PrimeQ[a], c=c+1; Print[c, " ", a]], {n, 0, 200000}]  (*b-file*)

Crossrefs

Cf. A000040, A002496, A028871, A050289, A056899, A240587, A234812.

Sequence in context: A135605 A091416 A162324 * A104953 A225139 A176942

Adjacent sequences: A235637 A235638 A235639 * A235641 A235642 A235643

Keyword

nonn

Author

K. D. Bajpai, Apr 20 2014

Status

approved