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-   -   Riesel Primes k*2^n-1, k<300 [Part II] (https://www.mersenneforum.org/showthread.php?t=8621)

Cruelty 2009-12-31 14:47

Status report
 
k=25 tested till n=2.29M
k=43 tested till n=1.9M
k=59 tested till n=3.35M
k=101 tested till n=2.22M
k=151 tested till n=2.18M
k=223 tested till n=2.1M
k=233 tested till n=1.45M
k=283 tested till n=1.61M

I am still working on those. Maybe 2010 will bring me more primes :wink:

Kosmaj 2010-01-03 07:38

[URL="http://www.15k.org/riesellist.html"]k<300 status page[/URL] updated with the above report by Cruelty, and the status of following RPS single-K drives:

k=15 at 1908k
k=17 at 2.2M

VBCurtis 2010-01-12 08:37

A full update, because it has been a few months: last report in parens
k=11 1.94M (1.88M)
k=41 1.22M (1.16M)
k=45 1.30M (no change, running on a quad I haven't seen in 7 months)
k=99 1.60M (no change, recently assigned to a quad running part time)
k=127 2.50M (2.41M)
k=211 1.0M (895k)
k=221 should no longer be assigned to me- Steven has taken over its search.
k=245 950k (806k)
k=263 960k (955k)
k=269 1.05M (1M)
k=281 1.0M (945k)
k=13,109,131,201 no change.
I set a goal of all these to 1.0M by the end of 2009. 263 was very close on my now-stolen laptop, so I have to redo quite a bit of the last 50k. 245 is on a work machine and should be past 1M, but the owner won't be around for a few weeks so I can't check it. I hope to update both within 3 weeks to 1M.
-Curtis

Kosmaj 2010-01-17 06:16

k=7 at 2.5M
k=139 at 1020k, prime at n=1016619
k=181 at 1010k

All k<245 are now tested up to n=1M.

VBCurtis 2010-01-24 08:06

k=127 2.70M
k=245 1.0M
k=263 1015k
k=269 1.34M

This completes all of my k<300 reservations to 1M.

k=405 complete to 770k, still sieving at 46T.
-Curtis

Kosmaj 2010-01-31 14:32

Thanks Curtis.

And Gryphon informed me that he tested k=255 up to n=1M.

Therefore, all k<300 are now completely tested up to n=1M!

em99010pepe 2010-01-31 14:47

[quote=Kosmaj;203975]

Therefore, all k<300 are now completely tested up to n=1M![/quote]

Congratulations to all contributors!

Cruelty 2010-01-31 15:08

Status report
 
k=25 tested till n=2.32M
k=43 tested till n=1.96M
k=59 tested till n=3.37M
k=101 tested till n=2.27M
k=151 tested till n=2.22M
k=223 tested till n=2.17M
k=233 tested till n=1.5M
k=283 tested till n=1.68M

Kosmaj 2010-02-11 03:41

k=9 at 1530k
k=21 at 1230k
k=91 and k=97 at 1120k
k=95 at 1050k
k=181 at 1020k
k=195 at 1M (more than a month ago, but forgot to report)

Releasing k=91 and k=195, further testing all others.

Kosmaj 2010-02-11 04:54

Update on k<300 minmax primes:

[CODE]
k largest prime
233 179992
13 233207
191 240802
249 251036[/CODE]

All are tested up to n=1M or more.
The largest primes of all other Ks have 300k digits or more.

k=283 was removed from the top of the list by Cruelty.
Its largest prime was at n=149351, but now it's at n=1702599.

The previous status can be found [URL="http://www.mersenneforum.org/showpost.php?p=121536&postcount=118"]here[/URL].

Cruelty 2010-02-13 09:10

I'm releasing k=283 @ n=1.715M :smile:


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