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A064962 Numbers k such that 1000k+1, 1000k+3, 1000k+7, 1000k+9 are all primes. 2
13, 1447, 2062, 5527, 6760, 8062, 11554, 11890, 14467, 23113, 23482, 24952, 25150, 28201, 28300, 31072, 31576, 36217, 41584, 41599, 45331, 50635, 56914, 66688, 67639, 69376, 75079, 80002, 81157, 82240, 84517, 88948, 90010, 90376, 91018 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Harry J. Smith, Table of n, a(n) for n = 1..1000

MATHEMATICA

Select[Range[10^5], PrimeQ[1000# + 1] && PrimeQ[1000# + 3] && PrimeQ[1000# + 7] && PrimeQ[1000# + 9] &]

PROG

(PARI) { n=0; for (m=1, 10^9, if(isprime(1000*m + 1) && isprime(1000*m + 3) && isprime(1000*m + 7) && isprime(1000*m + 9), write("b064962.txt", n++, " ", m); if (n==1000, return)) ) } \\ Harry J. Smith, Oct 01 2009

CROSSREFS

Cf. A007811, A064687.

Sequence in context: A196966 A203369 A197097 * A242562 A201357 A220551

Adjacent sequences:  A064959 A064960 A064961 * A064963 A064964 A064965

KEYWORD

nonn

AUTHOR

Robert G. Wilson v, Oct 29 2001

STATUS

approved

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Last modified October 18 23:35 EDT 2021. Contains 348071 sequences. (Running on oeis4.)