login
A176925
Primes of the form 2^n+41
1
43, 73, 2089, 8233, 131113, 33554473, 137438953513, 140737488355369, 9007199254741033, 2658455991569831745807614120560689193
OFFSET
1,1
COMMENTS
Generated by n = 1, 5, 11, 13, 17, 25, 37, 47, 53, 121, 445, 629, 839, 935, 1237, 3359, 3653, 4601,... - R. J. Mathar, Aug 24 2011
The next term has 134 digits. [From Harvey P. Dale, Sep 24 2011]
MATHEMATICA
Select[2^Range[0, 500]+41, PrimeQ] (* Harvey P. Dale, Sep 24 2011 *)
PROG
(Magma) [ a: n in [0..750] | IsPrime(a) where a is 2^n+41 ]
CROSSREFS
Sequence in context: A285017 A139932 A290635 * A080177 A238248 A121957
KEYWORD
nonn
AUTHOR
Vincenzo Librandi, Apr 29 2010
STATUS
approved