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-   -   Testing Guide (https://www.mersenneforum.org/showthread.php?t=27909)

mrk74 2022-06-30 23:28

Testing Guide
 
Just out of curiosity is there a guide of some that explains what each test actually does? I thought I had seen something before but don't remember where I saw it.

Uncwilly 2022-06-30 23:40

Does this look like what you want?
[url]https://www.mersenne.org/various/math.php[/url]

slandrum 2022-07-01 00:55

I particularly enjoyed: [QUOTE]The double-check, which takes just as long as a first-time test, is usually done about 2 years after the first-time test.[/QUOTE] I'm finding that most of the double checks I'm doing are 7-9 years after the original.

mrk74 2022-07-01 03:35

[QUOTE=Uncwilly;608755]Does this look like what you want?
[url]https://www.mersenne.org/various/math.php[/url][/QUOTE]
To a point. I think I was looking at the Prime Wiki and just couldn't find it again.

A more pointed question...what's the difference between a regular PRP test and a first time LL?

slandrum 2022-07-01 03:47

[url]https://en.wikipedia.org/wiki/Lucas%E2%80%93Lehmer_primality_test[/url]

[url]https://en.wikipedia.org/wiki/Probable_prime[/url]

Uncwilly 2022-07-01 04:21

[QUOTE=mrk74;608768]what's the difference between a regular PRP test and a first time LL?[/QUOTE]
LL gives an absolute and provable answer. PRP is gives a probable answer. If a PRP turns up a new MP, then LL will have to be run to prove it.

mrk74 2022-07-01 12:50

Unrelated question...

How is rolling avg figured and is it that important? I've noticed my numbers dropping but the computer usage for other things really hasn't changed. It's barely used for anything else.

kruoli 2022-07-01 16:41

[QUOTE=slandrum;608761]I'm finding that most of the double checks I'm doing are 7-9 years after the original.[/QUOTE]

At least at some point in time this statement was true…

slandrum 2022-07-01 17:06

[QUOTE=kruoli;608799]At least at some point in time this statement was true…[/QUOTE]

Right - but the page has obviously been edited within the last couple of years, and it's been a [B]long[/B] time since DC was about 2 years behind FTC.

kriesel 2022-07-01 17:40

[QUOTE=slandrum;608802]it's been a [B]long[/B] time since DC was about 2 years behind FTC.[/QUOTE][URL="https://www.mersenneforum.org/attachment.php?attachmentid=27073&d=1656696979"]2007[/URL] for 2 years; 2018 for 5 years; 1998 for 1 year.

mrk74 2022-07-02 23:50

[QUOTE=mrk74;608786]Unrelated question...

How is rolling avg figured and is it that important? I've noticed my numbers dropping but the computer usage for other things really hasn't changed. It's barely used for anything else.[/QUOTE]

I know I was told it can be inaccurate but I'm only at 73%. Changing yhe how often it will be used option changed it I know but not THIS much.


[QUOTE=Uncwilly;608771]LL gives an absolute and provable answer. PRP is gives a probable answer. If a PRP turns up a new MP, then LL will have to be run to prove it.[/QUOTE]

MP? Sorry I'm not up on the lingo much.


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