- Hi , all ,
What is the largest number ever located by a prime hunter which passed a
pseudo-primality test , but ultimately proved composite ?
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- --- Walter Nissen <wnissen@...> wrote:
> What is the largest number ever located by a prime hunter which passed aChrist begat one of over 100000 digits as part of the PIES project.
> pseudo-primality test , but ultimately proved composite ?
The form was Phi(3*2^n,b), with b=2^s*3^t, and the PRP test was base 2 -
which is asking for such situations to occur. However, that form can
yield real primes, so it had to be tested. (After deep sieving of course).
Cyclotomic forms are, by construction, notorious for their density in
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