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
Keywords
Examples
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.
Links
- K. D. Bajpai, Table of n, a(n) for n = 1..6694
Programs
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Maple
KD := proc() local a; a:=n^2+1234567890; if isprime(a) then RETURN (a); fi; end: seq(KD(), n=1..2000);
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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*)