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-   -   Bases 251-500 reservations/statuses/primes (https://www.mersenneforum.org/showthread.php?t=12993)

MyDogBuster 2012-01-22 18:50

R256
 
R256 tested n=75K-125K

9129*256^79124-1 is prime
5142*256^96403-1 is prime
6497*256^102104-1 is prime
9618*256^103168-1 is prime
8250*256^115971-1 is prime
7373*256^117071-1 is prime

32 k's remaining

Results emailed - Base released

Batalov 2012-01-26 20:36

S256 has no prime up to n<=300K. Continuing to 350K.

Puzzle-Peter 2012-01-27 20:43

1 Attachment(s)
R366 tested n=150k to 200k, two previously reported primes.

Continuing...

G30ffr3y 2012-01-29 16:48

Reserving R367 to n=100K

rogue 2012-02-03 14:21

1 Attachment(s)
S406 done to n=200000 and released. No primes. I was hoping for a hit as this is the most heavily weighted single k conjecture. More than 1900 tests in a range of 25000.

grueny 2012-02-05 00:00

status r253
 
r253 tested to n=179e3 ; no primes

grueny

henryzz 2012-02-13 17:48

Reserving S368 to 100k

MyDogBuster 2012-02-14 01:12

S264
 
S264 tested n=100K-200K - Nothing found

Results emailed Base released


Reserving R332 R334 R347 R353 to n=200K

gd_barnes 2012-02-14 10:23

[QUOTE=MyDogBuster;289324]S264 tested n=100K-200K - Nothing found

Results emailed Base released


Reserving R332 R334 R347 R353 to n=200K[/QUOTE]

I am assuming that you mean S264 (vs. S294) is complete to n=200K and that you are reserving R353 (vs. R352). R352 has 21 k's remaining.

I have edited your post accordingly. If incorrect, feel free to re-edit it and let me know.


Edit: Geez, I need typing lessons.

henryzz 2012-02-14 22:31

reserving S392

gd_barnes 2012-02-20 04:54

G30ffr3y has reported an excellent proof of R367 with a conjecture of k=620. With 3 k's remaining at n=50K, he found all 3 primes:

530*367^55209-1
114*367^68120-1
456*367^90682-1

This is 7th largest Riesel conjecture ever proven on our project and the largest of the 3 primes is in the top 5000 of all time! I have informed him to report it.

Congrats G30ffr3y! :smile:


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