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Old 2012-01-28, 13:22   #1
jwr257
 

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Question Message that M43112609 is prime! Wd1: 5B377150,00000000

I have been running Prime 95 on and on for a few years...I just completed a 100% running one of the tests when I found this in the comments.

M43112609 is prime! Wd1: 5B377150,00000000

What does this mean?
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Old 2012-01-28, 14:44   #2
Prime95
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It means your computer found a Mersenne prime number. The bad news is that this prime number was discovered a few years ago by someone else.

Your computer was testing this number for one of two reasons. 1) You were curious about what the program would do if it found a prime number and used the Advanced/Test menu to re-test a known Mersenne prime, or 2) A server bug caused the exponent to be sent to your computer for testing.

I presume the cause is #2 and I apologize for the bug. On the plus side, you can now rest assured that your computer is working properly and should it be lucky enough to be assigned an undiscovered Mersenne prime, it will dutifully prove it prime.
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Old 2012-01-29, 00:44   #3
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PrimeNet must of had a glitch. When will we ever have bug-proof programs?
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Old 2012-01-29, 00:45   #4
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Quote:
Originally Posted by Stargate38 View Post
When will we ever have bug-proof programs?
Never!
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Old 2012-01-29, 08:27   #5
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Quote:
Originally Posted by kar_bon View Post
Quote:
Originally Posted by Stargate38 View Post
PrimeNet must of had a glitch. When will we ever have bug-proof programs?
Never!
I could make a reasonable claim that this Dartmouth BASIC program
Code:
10 REM NO BUGS
20 END
is bug free.

Paul

Last fiddled with by xilman on 2012-01-29 at 08:27
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Old 2012-01-29, 09:06   #6
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Quote:
Originally Posted by xilman View Post
I could make a reasonable claim that this Dartmouth BASIC program
Code:
10 REM NO BUGS
20 END
is bug free.

Paul
It surely was meant for programs with a higher complexity

A funny note: The first 'bug' in a computer was a moth, taped on the log book after found.
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Old 2012-01-29, 11:35   #7
xilman
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Quote:
Originally Posted by kar_bon View Post
It surely was meant for programs with a higher complexity
Ah, in that case, I'll submit that this much more complex program is also bug free.
Code:
(quote (A list generated by a bug free Lisp program))
Sooner or later we'll find out what you meant by your rather dogmatic statement. We may even find out whether you are prepared to change your mind.

Paul
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Old 2012-01-29, 11:40   #8
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Quote:
Originally Posted by Stargate38 View Post
PrimeNet must of had a glitch. When will we ever have bug-proof programs?
Quote:
Originally Posted by xilman View Post
I could make a reasonable claim that this Dartmouth BASIC program
Code:
10 REM NO BUGS
20 END
is bug free.
Hmm. Are you two not talking about different things?

Boldification is mine. To highlight the difference.
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Old 2012-01-29, 12:47   #9
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Quote:
Originally Posted by retina View Post
Hmm. Are you two not talking about different things?

Boldification is mine. To highlight the difference.
I don't think so.

Each of the programs I gave is, IMO, bug proof and bug free.

Paul
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Old 2012-01-29, 15:21   #10
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Quote:
Originally Posted by kar_bon View Post
A funny note: The first 'bug' in a computer was a moth, taped on the log book after found.
Please see this article: http://en.wikipedia.org/wiki/Computer_bug
That story is only partially true.
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Old 2012-01-29, 15:36   #11
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Quote:
Originally Posted by Uncwilly View Post
Please see this article: http://en.wikipedia.org/wiki/Computer_bug
That story is only partially true.
You mean the story has a bug?
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