OFFSET
1,1
COMMENTS
This is the longest sequence that I have found of the class "2^n+/-(odd integer) is prime".
EXAMPLE
2^3+25229 = 25237 is prime
2^11+25229 = 27277 is prime
2^2+25229 = 25233 = 3x13x647
MATHEMATICA
Do[If[PrimeQ[2^n + 25229], Print[n]], {n, 33600}]
PROG
(PARI) is(n)=ispseudoprime(2^n+25229) \\ Charles R Greathouse IV, Jun 13 2017
CROSSREFS
KEYWORD
nonn
AUTHOR
Lei Zhou, Feb 03 2005
STATUS
approved