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-   -   43.5 - 44.0 to 2^63 (https://www.mersenneforum.org/showthread.php?t=8139)

tmorrow 2007-05-11 10:15

43.5 - 44.0 to 2^63
 
I'd like to bag this range to 2^63.

There 12146 exponents in this range based on the nofactor.zip file in the Mersenne database dated April 23, 2007 (the latest).

According to the "All Available Ranges" sticky, this range is available. These exponents are all already TF'ed up to 2^62.

Please let me know someone has already claimed this range so I can select another.

My progress will not be greased lightning, roughly the speed of half a P4 3GHz machine. I'm getting through them at a rate of about 44 minutes per exponent, that's roughly 33 exponents per day or 11945 exponents per year so I'm expecting just over a year to complete. I hope this rate is not too slow.

I will report back to this thread weekly and to George Woltman every month or so until the batch is completed.

1997rj7 2007-05-11 14:44

That range will be overtaken by Primenet in less than a year, likely in no more than 100 days.

You should probably pick a new range above 50M, where Primenet won't be for a good while. As an added bonus, you will be able to do more exponents per day.

tmorrow 2007-05-11 22:41

Eek! I didn't realise PrimeNet would be handing these exponents out so soon. I should have known better, I'm factoring 42015793 right now as a PrimeNet assignment.

I'll stop this range after the current exponent is finished - it's only been going for 12 hours and has completed 17+ exponents with no factors yet found. I'm not sure whether it's worth reporting such a small chunk of work to George or not.

tmorrow 2007-05-11 23:36

Work stopped now. Only 18 exponents completed. Results emailed to George.


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