[seqfan] Re: Semiprimes n such that n divides Fibonacci number F(n-1).
klaus-brockhaus at t-online.de
Fri Dec 10 16:36:28 CET 2010
It's very good that you don't have a still more seductive replacement!
"semiprimes" is OK, there are some interesting theorems involving them.
If numbers having exactly three prime factors play a role in important
theorems, they could be given a name, perhaps "triprimes". But otherwise
the so-called k-almost primes should remain simply nonprimes, numbers
having exactly k prime factors. It is desirable that they have this
seemingly lengthy description and not an obfuscating short name.
Am 10.12.2010 15:36, schrieb Charles Greathouse:
>> k-almost primes (I believe that njas hates that terminology)
> I don't myself like the term but don't have a good replacement. What
> other terms are used? I've occasionally seen k-primes (which mirrors
> the 'alternate' terms biprime, triprime, etc.). Anything else?
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