A131958 Prime numbers of the form 1 + Product_{k=1..n} prime(k)^prime(n-k+1).

5, 73, 21601, 2097197194438629126172451944256706311040000000000001

Offset

1,1

Comments

Any additional term is too large to include. A131959 gives corresponding n.

Links

Table of n, a(n) for n=1..4.

Example

1 + (2^5)*(3^3)*(5^2) = 21601, a prime, is a term.

Crossrefs

Cf. A131959.

Sequence in context: A012640 A353042 A128889 * A051156 A092826 A334258

Adjacent sequences: A131955 A131956 A131957 * A131959 A131960 A131961

Keyword

nonn

Author

Rick L. Shepherd, Aug 01 2007

Status

approved