OFFSET
1,2
EXAMPLE
If n=217 then 23*n + 2 = 4993 (prime).
PROG
(Magma) [n: n in [0..100000] |IsPrime(23*n + 2)]; // Vincenzo Librandi, Nov 13 2010
(PARI) is(n)=isprime(23*n+2) \\ Charles R Greathouse IV, Jun 13 2017
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Parthasarathy Nambi, Nov 01 2005
STATUS
approved