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A070530 Primes of form Cyclotomic[n,2^n]. 0
5, 73, 257, 4432676798593 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

EXAMPLE

4th term is Cyclotomic[7,128]=1+128+16384+2097152+..+4398046511104=4432676798593; the next 2 known terms have almost 200 or more than 1000 decimal digits.

MATHEMATICA

Do[s=Cyclotomic[n, 2^n]; If[PrimeQ[s], Print[s]], {n, 1, 59}]

CROSSREFS

Cf. A070518-A070527.

Sequence in context: A138623 A206280 A070526 * A248046 A059017 A099667

Adjacent sequences:  A070527 A070528 A070529 * A070531 A070532 A070533

KEYWORD

nonn

AUTHOR

Labos Elemer, May 02 2002

STATUS

approved

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Last modified March 31 03:08 EDT 2020. Contains 333136 sequences. (Running on oeis4.)