7825Re: [PrimeNumbers] composite trinomials
- Jul 2, 2002--- paulunderwooduk <paulunderwood@...> wrote:
> Hi,Hi Folks!
> I have just seen these:
> 9999 2^65536-2^256+1 19729 x37 02 prime #0207
> 9999 2^262144-2^512+1 78914 x37 02 #0207
> which look improbable and a BLS no-hoper.
Actually, the first one doesn't look too bad at all.
65536-256 = 65280.
65280 has 72 divisors, which means N-1 also has 72 cyclotomic factors, not
counting Aurifeullians that is. Might be worth a look. But provable or not it's
still not archivable. But a nice challenge....
> PFGW Version 20020515.Win_Dev (Beta software, 'caveat utilitor')__________________________________________________
> PRP: 2^65536-2^256+1 65000/65535
> PFGW Version 20020515.Win_Dev (Beta software, 'caveat utilitor')
> PRP: 2^262144-2^512+1 262143/262143
> Not even a PRP.
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