17868Re: [PrimeNumbers] Re: Cubic x^3 + x^2 + x + t prime generators
- Mar 28, 2006--- Mark Underwood <mark.underwood@...> wrote:
> And to top it all off:Now do you see why PIES has such the incredible density of primes that it has?
> x^8 - x^4 + 1 has no prime factors below 73 (!)
The above is just Phi(24). PIES is looking at Phi(49152) and Phi(98304). The
super-fruit subprojects can have even higher densities.
One puzzle I set the PIES guys was the following:
Mathematicians are invited to calculate the relative density of primes
of the form Phi(24576,715*b^2) compared to arbitrary numbers of the
>>>Just finding out what its smallest possible factor is should be an eye-opener.
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