[seqfan] Re: -5 is not a prime

[Brendan McKay]

I'm with Neil on this. The prime numbers are 2, 3, 5, 7, ... . If you
want to work with a large set of numbers, call it something else as
"prime number" is already taken and bound "to the jagged rocks in
adamantine bonds infrangible" (Prometheus Bound).

Incidentally, Maple gets it right.

Brendan.

On 4/1/21 10:47 am, Neil Sloane wrote:
> Unter einer Primzahl versteht man eine positive ganze Zahl, welche von 1
> verschieden und nur durch 1 und durch sich
> selbst teilbar ist.