|
|
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
|
|
|
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
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|