Riesel Base 58
 

23829*58^20072-1
59679*58^20453-1
99486*58^20473-1
23958*58^20564-1
27651*58^20657-1
53754*58^20929-1

Completed to 21000 and continuing

[quote=rogue;173144]23829*58^20072-1
59679*58^20453-1
99486*58^20473-1
23958*58^20564-1
27651*58^20657-1
53754*58^20929-1

Completed to 21000 and continuing[/quote]

Balancing note: k=23958 already had a prime at n=18360. 408 k's are remaining at n=21K.

Riesel base 75 is complete to n=23K; 16 k's remain; continuing to n=25K. No primes have been found for 16 k's since n=11585!

Sierp base 81 is complete to n=16K; 22 k's remain; continuing to n=25K.

Sierp base 88 is next on the agenda after Riesel base 75 is complete.

Riesel base 75 is complete to n=25K; 16 k's remain; now unreserved.

Sierp base 81 is at n=18K; 20 k's remain; continuing to n=25K.

I'm now beginning work on Sierp base 61 for n=16K-25K instead of Sierp base 88. After Sierp base 81 is done, I'll probably work on Riesel base 95 for n=10K-25K followed by Sierp base 88. I'll then finish up with both Riesel and Sierp base 46.

Riesel Base 58
 

63143*58^21116-1
67874*58^21172-1
3126*58^21270-1
74673*58^21320-1
31743*58^21397-1
84207*58^21428-1
51123*58^21561-1
73734*58^21723-1

Complete to 22000 and continuing

[QUOTE=gd_barnes;175001]Here's a nice one:

3104*22^161188-1 is prime :smile:


Gary[/QUOTE]

Grats!

Primality testing 2819*46^33458-1 [N+1, Brillhart-Lehmer-Selfridge]
Running N+1 test using discriminant 3, base 1+sqrt(3)
Calling Brillhart-Lehmer-Selfridge with factored part 81.89%
2819*46^33458-1 is prime! (966.8294s+0.0237s)

Willem

Nice prime Willem. It will save me some testing on Riesel base 46.

By the way, I have some dormant reservations for you. They are:

Riesel base 7 k=315768, 328226, 477458, 623264, and 839022 at n=108K.

Riesel base 49 k=2186 at n=116K.

Can you give us a status update on those? Their last status was Nov. 30th, 2008.


Thanks,
Gary

[QUOTE=gd_barnes;175064]Nice prime Willem. It will save me some testing on Riesel base 46.

By the way, I have some dormant reservations for you. They are:

Riesel base 7 k=315768, 328226, 477458, 623264, and 839022 at n=108K.

Riesel base 49 k=2186 at n=116K.

Can you give us a status update on those? Their last status was Nov. 30th, 2008.


Thanks,
Gary[/QUOTE]


Sure. I've lost most of my computing power, so progress has been lacking. I just retrieved my sieve file for the base 7. I'll take it to n=120,000. it's almost there.
The base 49 is at 133,000. I've also done the stretch from 200,000 down to 189,000. I'll continue these until they meet. But that's at a snail's pace.
I've also started on Riesel 23, I'll take the remaining from 180,000 to 200,000.

Cheers, Willem.

Riesel Base 58
 

47994*58^22027-1
21422*58^22543-1
75807*58^22991-1

Completed to 23000 and continuing.

Sierp base 81 is complete to n=25K; 19 k's remain; now unreserved.

Sierp base 61 is at n=23K; 18 k's remain; continuing to n=25K.

I'm just now starting on Riesel base 95 for n=10K-25K.

After base 61 is done, I'll start on Sierp base 88 up to n=25K.

After that, to finish up my reservations for bases > 32, it will be Riesel and Sierp bases 46 up to n=25K.

Filling in lots of holes... :smile:

[quote=MrOzzy;175746]Riesel base 117 at n=66,5k no further primes.
2100s / test hurts ..[/quote]


Try 4000 secs per test for Riesel base 27 at n=200K. It had been running 3500 secs up until n=~196K. Needless to say, I stopped it at n=200K.