OFFSET
1,1
EXAMPLE
If n=144 then 5*n^5 + 1 = 309586821121 (prime).
MATHEMATICA
Select[Range[2000], PrimeQ[5#^5 + 1] &] (* Stefan Steinerberger and Giovanni Resta, Apr 22 2006 *)
PROG
(PARI) is(n)=isprime(5*n^5+1) \\ Charles R Greathouse IV, Jun 13 2017
CROSSREFS
KEYWORD
nonn,less,easy
AUTHOR
Parthasarathy Nambi, Apr 20 2006
EXTENSIONS
More terms from Stefan Steinerberger and Giovanni Resta, Apr 22 2006
STATUS
approved