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Primes in the sums of the first 2^n primes or primes in A099825.
1

%I #11 Jul 01 2024 02:41:31

%S 2,5,17,8893,868151,3875933,219554912086470964379,

%T 63036368490471985096643,26151660747268050131008657684404431

%N Primes in the sums of the first 2^n primes or primes in A099825.

%C The programs in the link require the construction of a wall to wall binary file containing the first 10.6 * 10^9 primes.

%H Cino Hilliard, <a href="http://groups.msn.com/First300billionprimes/sumprimeslt2n.msnw">Sum first 2^n Primes</a>. [Link corrected by Alexey Beshenov, Jan 25 2009] [broken link]

%F a(n) = A099825(A121248(n)). - _Amiram Eldar_, Jul 01 2024

%e Sum of first 2^32 primes = 219554912086470964379 which is prime.

%Y Cf. A099825, A121248.

%K nonn,hard,more

%O 1,1

%A _Cino Hilliard_, Jan 14 2006

%E Offset corrected and a(8)-a(9) added by _Amiram Eldar_, Jul 01 2024