2007 fun

[Jonathan Post]

To generalize beyond base 10 we have, 2*x^3+0*x^2 + 0*x + 7 = 2*x*3+7  is an
irreducible polynomial over [image: ZZ].
The cubic 2*n^3 + 7 is prime for n = 2, 3, 5, 6, 8, 12, 17, 20, ...
The respective primes are 23, 61, 257, 439, 1031, 3463, 9833, 16007, ...
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://list.seqfan.eu/pipermail/seqfan/attachments/20070103/48a0f3b0/attachment-0001.htm>