Generalized Cullen / Woodall Coordinated Search - Reservations/Status

[rogue]

Originally Posted by rogue

Reserving Cullen bases 52, 54, 56, 57, 58, 59 to n = 200000.

This range is completed. The only new prime is 195522*52^195522+1.

[rogue]

Originally Posted by ryanp

Testing Cullen b=14 from n=1M to n=2M completed. Found 3 new primes:

1198433*14^1198433+1
1486287*14^1486287+1
1909683*14^1909683+1

as predicted a few day ago. Nice run!

Originally Posted by rogue

Thanks. Of course I wouldn't be surprised if you find your next mega-digit Cullen prime with base 14.

[rogue]

Barring mistakes I have applied everyone's updates thru this post. Dozens of posted affected dozens of bases, some of which had multiple updates. Please double-check my work and let me know if anything is amiss.

Although most of the posts in this thread are for Cullen, I am thinking that there would be value in separating Cullen and Woodall into separate threads since both +1 and -1 for the same base are very rarely checked concurrently by the same person. Thoughts?

[Cybertronic]

Originally Posted by rogue

Barring mistakes I have applied everyone's updates thru this post. Dozens of posted affected dozens of bases, some of which had multiple updates. Please double-check my work and let me know if anything is amiss.

Although most of the posts in this thread are for Cullen, I am thinking that there would be value in separating Cullen and Woodall into separate threads since both +1 and -1 for the same base are very rarely checked concurrently by the same person. Thoughts?

Hello Mark, 2 threads is a good idea.. I think.

Here my up to date databases:
https://pzktupel.de/Transfer/GCULLEN_DB.txt
https://pzktupel.de/Transfer/GWOODALL_DB.txt

"ENDE" is only a word for terminating to a special base
All known numbers are PRP/prime...I double checked up to 250.000 digits, so larger are at t5k.org.

[kar_bon]

2 threads for Cullen and Woodall: no from me.
There're 5 threads for such searches and another thread makes it more complicated to keep an eye on updating the Wiki pages.

I've also edited the Cullen and Woodall base 127 pages:
If any new page is created, a first look at the Top5000 page should be done (missed prime for Cu127 at n=400254).
I've also included data from the old pages by D.Hermle for Cullen side and the news page from S.Harvey for Woodall side!

The news page is an immense collection of data for Woodall bases but it takes much time to compile those for the Wiki.
I'm still working on creating new bases to list most primes from the "Clean list" from Harvey so the Cullen have to wait here.

[firejuggler]

B259+ checked upto 100k, no prime.
Taking B261+ to 100k.

[rogue]

Cullen bases 62-68 are completed to n=200000 and released.

One new prime was found: 195875*68^195875+1

I am reserving Cullen bases 80, 82, 83, 84, 85, 86, 88, 90, 92, 94, 95, 96, 97, 99, and 100 to n=200000.

I am reserving Woodall bases 82, 84, 85, 86, 88, 90, 91, 92, 94, 95, 96, 98 and 100 to n=200000.

When this reservation is done all bases <= 100 will be searched to n=200000.

There are a few Woodall bases <= 200 that are not searched to n=100000 if anyone is looking for low-hanging fruit. Few Cullen bases > 100 have been searched to n > 10000.

[Citrix]

I would like to reserve the following Woodall. Starting from scratch to double check.
I do not see anyone else has reserved these.

145
209
227
229
241

[kar_bon]

Reserving Wo271, Wo529 and Wo2048.

[lalera]

hi,
gcb=23, n=200k-400k done
no prp found
gcb=23 released

[firejuggler]

Cullen 261 taken to 100e3, no prime.
taking b263+