HASH.HELP has never guaranteed a prime number.  You'll note their wording -
it's not a recommended modulo, it's the smallest you should make it.

I was told by the uniVerse folks (back when it was Vmark, so that tells you
how long ago it was) that since not all of the hashing algorithms required
prime numbers to be efficient, HASH.HELP wouldn't always recommend a minimum
modulo that was prime.

Why it would recommend two different types, I don't know.  The only thing I
can think of is that they're running two different types of analysis - one
just a general overview and one a more detailed run.  That's just a guess,
though.


-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Jerry Banker
Sent: Wednesday, June 20, 2007 8:58 AM
To: u2-users@listserver.u2ug.org
Subject: 

I just came across what may be a bug in HASH.HELP. I ran HASH.HELP on a
static hash file and it told me the smallest modulus should be 80015
(yes, not a prime number), smallest separation or 4, and the best type
of 10.

I then ran HASH.HELP.DETAIL on the same file and got 80021, 4, and 18
respectively.

In this second case the modulus is a prime number. No changes were being
made on the system because it is our test system and I was the only one
on it at the time. This was on Solaris 8 running Universe 10.1.12 in
Reality flavor.
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