mersenneforum.org

mersenneforum.org (https://www.mersenneforum.org/index.php)
-   No Prime Left Behind (https://www.mersenneforum.org/forumdisplay.php?f=82)
-   -   Report top-5000 primes for all k<=1001 (https://www.mersenneforum.org/showthread.php?t=9891)

gd_barnes 2008-08-02 10:58

A prime a day keeps the ills away...

789*2^513943-1 is prime

gd_barnes 2008-08-03 12:31

471*2^514399-1 is prime

em99010pepe 2008-08-03 15:33

305*2^662808-1 is prime

TimSorbet 2008-08-04 11:11

901*2^530103-1 is prime!

Finally! It's been nearly two months since my last prime, and I "should" find a prime about every month at this size. This was the largest gap (in both time and n/digits) between primes I've had.

:george::wacky::grin::grin::grin:

July was my first month since I started NPLB that I didn't get a prime. With 159580 digits, this is my first prime that will be placed on the short list once verification is finished.

gd_barnes 2008-08-04 11:21

[quote=Mini-Geek;138769]901*2^530103-1 is prime!

Finally! It's been nearly two months since my last prime, and I "should" find a prime about every month at this size. This was the largest gap (in both time and n/digits) between primes I've had.

:george::wacky::grin::grin::grin:

July was my first month since I started NPLB that I didn't get a prime. With 159580 digits, this is my first prime that will be placed on the short list once verification is finished.[/quote]


Congrats! That's a biggie right after the fftlen change! So, what does this "short list" mean anyway? What causes a prime to be on the short list? Is there some LONG list that the rest of the primes are on? (lol)


Gary

TimSorbet 2008-08-04 11:33

[quote=gd_barnes;138771]Congrats! That's a biggie right after the fftlen change! So, what does this "short list" mean anyway? What causes a prime to be on the short list? Is there some LONG list that the rest of the primes are on? (lol)


Gary[/quote]
The "short" list is every prime over 150,000 digits, plus smaller primes that are of special, interesting forms, while the normal list is the top 5,000 primes, plus smaller primes that are of special, interesting forms. With current primes, that means it's the top 1543 primes, plus special ones.
[url]http://primes.utm.edu/primes/download.php[/url]
By the way, verification has finished, and it is number 1281 and on the short list. This is my tenth prime.

mdettweiler 2008-08-04 21:02

755*2^514952-1 is prime! :grin: (From AES300 LLRnet server, in its highly profitable range of 510.5K-516K.)

gd_barnes 2008-08-07 11:27

561*2^515702-1 is prime

glennpat 2008-08-07 21:48

945*2^515762-1 is prime

em99010pepe 2008-08-07 22:15

573*2^515815-1 Helix

gd_barnes 2008-08-07 23:24

10 primes in an n=5500 range for n>510K. AMAZING!! What a range! :smile:


All times are UTC. The time now is 03:01.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2023, Jelsoft Enterprises Ltd.