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-   -   Carol / Kynea Coordinated Search - Reservations/Status (https://www.mersenneforum.org/showthread.php?t=21216)

 axn 2016-05-10 03:03

[QUOTE=lalera;433377]hi,
i would like to get a list of valid bases for b=100 - 200
i want to do them to n=10000 - maybe higher[/QUOTE]

100 (10^2) also should be skipped.

 axn 2016-05-17 03:04

1 Attachment(s)
Base 12 completed to 50k. No new primes found (other than the one reported in the Prime thread). Unreserving.

Base 18 completed to 40k. No new primes. Unresereving. Here is a sieve file from 40k-100k. Sieved not too deep (3e11).

 Batalov 2016-05-18 18:14

I'd quickly searched them just now. A list generated with GP was
[CODE]? forstep(b=2,2000,2,if(ispower(b)>1,next);q=0;for(n=1,400,if(ispseudoprime((b^n-1)^2-2),q=1;break);if(ispseudoprime((b^n+1)^2-2),q=1;break));if(!q,print1(" "b)))
368 640 688 926 970 982 1038 1270 1318 1388 1432 1452 1466 1468 1484 1614 1656 1852 1950 1992[/CODE]
and then I sieved the smaller ones (up to 1432) to n<=10000 and started pfgw. After a few minutes only b=640, 688, 1388 survived.

I guess, I will reserve b=640, 688 to n <= 30000 for starters, now.

 lalera 2016-05-19 13:32

hi,
please do reserve for me
base 28, n=1000 to 30000

 rogue 2016-05-21 17:19

Completed to n=600,000. No new primes and continuing.

 lalera 2016-05-29 17:29

hi,
please do reserve for me
b=60, n=1000 to 30000
b=62, n=1000 to 30000

 lalera 2016-05-29 17:32

hi,
dereserveing base 6

 rogue 2016-05-31 12:06

Complete to 625,000 and continuing. (2^621443+1)^2-2 is the only new prime and was reported in the other thread.

 lalera 2016-06-07 19:46

hi,
status update for carol / kynea
b=74, n=69000 to 78000
no prime
continuing

 rogue 2016-06-12 19:04

Completed to n=650,000. No new primes and continuing.

 lalera 2016-06-15 10:49

hi,
dereserveing base 74

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