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-   -   Understanding assignment rules (https://www.mersenneforum.org/showthread.php?t=21317)

Fred 2016-05-19 12:55

Understanding assignment rules
 
Came across a new thing today, and just looking to further understand it.

It have a machine doing lower first time LL tests. It recently checked 67842707, only to find after completion that it was really a double check because it had already been completed by someone in Nov of 1995. What happened here?

[url]http://www.mersenne.org/report_exponent/?exp_lo=67842707&full=1[/url]

Uncwilly 2016-05-19 13:34

You mean 2015, not 1995.

Most likely the previous result had a 'bad' error code. The number would have then been marked as available for a First time check again. Test with bad error codes are far less likely to match other exponents. There is a good reason for this. Someone else ran across this recently too. Rather than have a bad test make us miss a new Prime until we get to that range as a DC, those with 'bad' error codes are rerun soon.

axn 2016-05-19 13:35

*Ninja'd by Uncwilly*

Mark Rose 2016-05-19 13:40

Yep, I've also got one of those in progress, [url=http://www.mersenne.org/report_exponent/?exp_lo=68844197&full=1]M68844197[/url].


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