18810Re: [PrimeNumbers] Re: Complex primes?
- Mar 20, 2007On 3/20/07, Rob <robdine@...> wrote:
> Isn't i+1 = i*(1-i) and so not prime?Hi Rob,
that's analogous to saying "Isn't 7 = -1 * -7 and so not prime?"
The rules for primes are no divisors except for UNITS and themselves,
where units are things that have reciprocals. Since 1/i = -i is also
a Gaussian integer, it's a unit and so we don't count it.
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