Bases 6-32 reservations/statuses/primes

[michaf]

24 mini-successes for Riesel base 24:

5629*24^7306-1
6131*24^7357-1
20414*24^7358-1
12136*24^7391-1
2599*24^7620-1
9066*24^7631-1
18824*24^7640-1
4491*24^7641-1
5379*24^7774-1
23584*24^7846-1
18859*24^7894-1
17614*24^7898-1
13214*24^7900-1
23004*24^8000-1
30626*24^8085-1
7354*24^8250-1
10316*24^8367-1
21151*24^8433-1
4626*24^8594-1
3541*24^8587-1
26516*24^8613-1
5501*24^8639-1
6059*24^8658-1
30914*24^8666-1
are all prime

That leaves 251 k's to tackle

[mdettweiler]

Riesel Base 30 k=25 sieved to p=600G for range n=25K-100K, releasing. Sieve file attached.

[kar_bon]

after found prime 40657*6^39087-1:

16 candidates to go.
- k=1597 at 155k
- k=9577 at 58k
- other 14 k at 39.3k

[mdettweiler]

Reserving Riesel base 28 k=4322, 4436, and 4871 up to n=25K (currently all at n=5K).

[mdettweiler]

Only hours after I reserve three Riesel Base 28 k's, and I find a probable prime waiting in my lresults file!

Here it is:

4436*28^6242-1 is prime! (Found probable prime by LLR, proved prime with Proth.exe. I would have used PFGW, but I'm using Linux, and I don't have the PFGW linux program--too lazy to register for Yahoo Groups to download it--and it wouldn't work in Wine (the program that lets you run most Windows programs on Linux), whereas Proth.exe does. So I just used Proth.exe, which was fine anyway for a small number like this.)

My second prime so far!

Note: I didn't notice the prime in my lresults file until more than an hour after it was found, so I ended up searching k=4436 up to n=13930.

I'm continuing to work on the remaining two reserved k's, both at about n=14.3K.

[mdettweiler]

Riesel base 28 k=4322 and 4871 completed up to n=25K, releasing. Prime found on k=4436 (already reported in the "report primes here" thread); k=4436 ended up being tested to n=13930 because I didn't notice the prime until about an hour after it was found.

lresults for the three k's are attached.

[japelprime]

Completed n to 170k. No prime. I will send the results to gd_barnes when n =200k.

[gd_barnes]

Thanks for info. Japelprime. That's a lot of testing!

Meanwhile...Carlos has unreserved Sierp base 12 k=404 that was tested to n=88.5K. I have put a sieved file to n=100K on the Sierp reservations web page if anyone is interested in 'cleaning' it.


Gary

[em99010pepe]

Originally Posted by gd_barnes

Thanks for info. Japelprime. That's a lot of testing!

Meanwhile...Carlos has unreserved Sierp base 12 k=404 that was tested to n=88.5K. I have put a sieved file to n=100K on the Sierp reservations web page if anyone is interested in 'cleaning' it.


Gary

Oops...it's done up to n=96.970k.

[gd_barnes]

Originally Posted by em99010pepe

Oops...it's done up to n=96.970k.

OK, 82 tests to go. I'll reserve it and take it up to n=100K.

Were you running this on a slower machine? A preliminary test at n=97K on my 1.66 Ghz Dell core duo laptop shows ~3.35 ms per pit * 347758 bits = ~1182 secs. testing time vs. your 2200+ secs.

So this should take me about 27-28 CPU hours to complete it.

Maybe my machine is faster at non-powers-of-2 bases.


Gary

[Siemelink]

2319*28^65184-1 is a probable prime. Time: 894.036 sec.
Please credit George Woltman's PRP for this result!

Testing with pfgw at the moment.

Willem.