A big one drops for odd-n...
 

From the 'regular' primes thread:

Base 2 odd-n:
8367*2^313705-1 :smile:

I'm still working on Base 2 odd-n k=6927. I'm currently at n=324K base 2.


Gary

Riesel base 6
 

40657*6^39087-1 is prime (status see other thread)

Gongrats, Gary! Two more prime for me for R. odd n
 

Very good news, Gary, and many congrats!

I also found two more primes in my range :

100377 231813 200754*2^231812-1 is prime! Time : 151.901 sec.
161583 138711 323166*2^138710-1 is prime! Time : 157.329 sec.

Also, I reached my 256K limit for :

k = 86613, n = 262111, no prime...
k = 163503, n = 262107, no prime...

So, I am unreserving these two k's for now.

After your last discovery, there are now 17 k's remaining, 6 of them I tested up to n <= 256K.
Regards,
Jean

Status on double-check
 

[quote=gd_barnes]
2. I have to rerun the entire batch for k=16734 and k=19464 on a different machine to see if I missed any primes. (not bad; ~2 CPU days)
3. I have to rerun the entire batch for n=100K-104K for Sierp base 16 on a different machine(s) looking for missing primes. (bad bad; ~10-12 CPU days)
[/quote]

Status on this double-check:

k=13854, 16734, and 19464 for Riesel base 4 have now been double-checked up to their original limit on n=324K. No missing primes were found and the one k=16734 prime was confirmed.

k=13854 and 19464 have been sieved higher and are now continuing on from there.

n=100K-104K for Sierp base 16 is about half-done and should be complete ~Monday-Tuesday. No missing primes so far.


Gary

Riesel base 2 - odd n's, unreserving 4 k's
 

I reached the 256K n limit for 4 new k's, so I will unreserve these k's for now :

k = 99363, last n = 262143
k = 103947, last n = 261941
k = 106377, last n = 262065
k = 130467, last n = 262109

No new primes...

I shall be abroad for two weeks, but I hope my 7 remaining tests will be completed when going back...

Regards,
Jean

[quote=gd_barnes;124548]
Were you running this on a slower machine?[/quote]

Yes.

Riesel base 2 odd-n status
 

k=6927 now at n=414K; no primes

testing to n=500K base 2 in conjunction with Riesel base 4 k=13854

Status on 2 k's for Riesel base 4
 

Riesel base 4 k=13854 and 19464 now at n=207K base 4. No primes.

This also means that Riesel base 16 same k's are now at n=103.5K.

Going to at least n=250K base 4.

Sierp base 2 odd-n status
 

k=37953, 53133, 60357, 70467, 80463, 84363, 85287 all at n=224K.

All going to n=600K or until a prime is found.

Riesel base 4 and 16 status on 2 reserved k's
 

For Riesel base 4 k=13854 and 19464, I am at n=250K. I decided to go ahead and take them through n=300K.

This means that for the same k's on Riesel base 16, I'm at n=125K.

Riesel and Sierp odd-n statuses
 

Riesel base 2 odd-n k=6927 now at n=500K; no primes. I'll up my test limit to n=600K base 2 in conjunction with Riesel base 4 k=13854.


Sierp base 2 odd-n k=37953, 53133, 60357, 70467, 80463, 84363, & 85287 all at n=250K; no primes. Still going to n=600K on all.


Gary