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A033561
Primes p such that 6!+p is also prime.
1
7, 13, 19, 23, 31, 37, 41, 53, 67, 89, 101, 103, 107, 109, 137, 139, 157, 163, 167, 191, 199, 227, 233, 251, 257, 263, 271, 277, 293, 311, 313, 331, 349, 367, 373, 383, 389, 397, 409, 431, 433, 443, 461, 467, 503, 509
OFFSET
1,1
LINKS
MATHEMATICA
Select[Prime[Range[800]], PrimeQ[# + 720]&] (* Vincenzo Librandi, Apr 10 2013 *)
PROG
(Magma) [p: p in PrimesUpTo(800)|IsPrime(p+720)]; // Vincenzo Librandi, Apr 10 2013
CROSSREFS
Sequence in context: A088982 A354460 A176406 * A227030 A049591 A176180
KEYWORD
nonn,easy
AUTHOR
STATUS
approved