|
|
A156009
|
|
Primes p such that 64*p + 189 is also prime.
|
|
4
|
|
|
2, 5, 13, 17, 37, 53, 61, 71, 73, 83, 97, 101, 103, 127, 131, 173, 191, 193, 211, 223, 227, 233, 251, 263, 283, 317, 337, 347, 367, 373, 431, 433, 443, 457, 487, 503, 521, 557, 577, 601, 641, 643, 647, 653, 673, 677, 701, 743, 797, 821, 823, 827, 883, 887, 907
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
LINKS
|
|
|
MAPLE
|
a := proc (n) if isprime(64*ithprime(n)+189) = true then ithprime(n) else end if end proc: seq(a(n), n = 1 .. 180); # Emeric Deutsch, Mar 01 2009
|
|
MATHEMATICA
|
Select[Prime[Range[1000]], PrimeQ[(64*# + 189)]&] (* Vincenzo Librandi, Oct 30 2012 *)
|
|
PROG
|
(Magma) [p: p in PrimesUpTo(1000)| IsPrime(64*p + 189)]; // Vincenzo Librandi, Oct 30 2012
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,easy
|
|
AUTHOR
|
|
|
EXTENSIONS
|
|
|
STATUS
|
approved
|
|
|
|