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-   -   Report top-5000 primes for all k<=1001 (https://www.mersenneforum.org/showthread.php?t=9891)

gd_barnes 2008-03-07 23:35

A prime story...
 
Spoken in the tone of the narrarator for "A Christmas Story"; you know the one with the BB gun, the kid who gets his tongue stuck to the frozen pole, etc.; that one?:

[quote]
There he was one Friday afternoon going upstairs to change his machines over to port 5000 for an LLRnet rally coming around the corner.

Much to his dismay, there was something wrong with those crunchers. Port 5000 would not work on them so back he went to change them back to ports 100 and 300.

Gary was now feeling very down this day because none of his machines had been treating him well lately. To further his depressed state, he checked the forums and something was amiss. Port 5000, that all powerful mammoth of a server machine, had gone down. Now his poor machines were forced to remain on old klunky ports 100 and 300 and continue spitting out composites until the end of time.

Much to his delight, he checked the forums 1 hour later and all was well. Port 5000 was purring like a finely-tuned machine. But the delight was short-lived as he trudged back upstairs huffing in annoyance at the inconvience bestowed upon him.

There he went, 1 by 1 changing the machines back AGAIN from old klunky 100 and 300 to the finely tuned 5000 until only 1 remained.
[/quote]

Now, in the tone of the 'Larry, the Cable Guy' when he tells the story of "Twas the night before a non-denominational winter holiday" (instead of the "The night before Christmas"). If you haven't seen this, be prepared to cry. It is so friggin funny! Just google "Larry Cable Guy non-specific holiday figure".

[quote]
One lonely machine there did still remain; one final switch to put him out of his pain.

He turned on the monitor; his eyes must have been playing tricks because that old port 300 had been shooting just bricks.

In front of him, this just could not be, there must have been a malfunction on that final P.C.

Low-and-behold he did stare until he started to cry, but a nice juicy prime was staring him back in the eye!
[/quote]

:smile:



True story by the way (except the depression and crying part). lol

On that final machine before the changeover, the next-to-last test on it spit one out:

833*2^373286-1 is prime!


All thanks to IronBits server going down this afternoon! :smile:


Gary

em99010pepe 2008-03-11 12:48

I bet today we are going to reach 3rd overall in terms of number of primes...lol

Mini-Geek 2008-03-11 13:28

[URL]http://primes.utm.edu/bios/top20.php?type=project&by=PrimesRank&at=4&id=518[/URL]
Rank 4!
We're two behind TPS. Two to go, and we're number three...after that, we have about 300 to go to the next rank (ignoring what numbers fall off).

kar_bon 2008-03-11 14:18

871*2^347847-1 is prime

gd_barnes 2008-03-11 19:23

And with this unbelievable trio within n=26 of each other, we will be #3!:

499*2^374433-1 is prime
531*2^374455-1 is prime
999*2^374459-1 is prime


:george::george::george:

gd_barnes 2008-03-11 19:28

[quote=em99010pepe;128477]I bet today we are going to reach 3rd overall in terms of number of primes...lol[/quote]

You are highly prophetic! lol

I'm counting 9 top-5000 primes today U.S. time; 11 GMT time!

Bringin' down the house! :smile:

Mini-Geek 2008-03-11 19:30

[quote=gd_barnes;128550]And with this unbelievable trio within n=26 of each other, we will be #3!:

499*2^374433-1 is prime
531*2^374455-1 is prime
999*2^374459-1 is prime


:george::george::george:[/quote]
Congrats! We became tied with TPS earlier today for slot 3 because some other project bumped another 333333 off the list, these primes just finished it off so we are really in spot 3.
:party:

gd_barnes 2008-03-11 21:17

[quote=em99010pepe;128557]user=Free-DC_Beyond
[03/11/08 14:32:15]
473*2^374414-1 is prime![/quote]

Unbelievable. 4 primes within n=45 of each other!!

I think Karsten had 4 new primes in a single n=200 manual LLR reservation earlier but that was at a lower range and I think they were more spread out than this. A truly remarkable run of primes here.

What's even more amazing is that 2 of the 4 are for k=400-500, which have many more previously found primes than any other 100k range for k=400-1001.

kar_bon 2008-03-12 01:11

495*2^353869-1 is prime!

gd_barnes 2008-03-12 01:19

Final tally: 13 top-5000 primes from midnight to midnight GMT!!

Definitely a new daily record for NPLB. I seem to recall 11 previously but I'm not sure if they were all top-5000.

All new except one...What a run!

Even better...with Karsten's last prime, we're at 13 primes from midnight-now CDT U.S. with >3.5 hours to go...amazing. Perhaps we'll get another couple of them before midnight here. :smile:

em99010pepe 2008-03-12 06:00

user=Free-DC_IronBits
[03/12/08 03:09:36]
685*2^300797-1 is prime! confirmed

user=Free-DC_em99010pepe
[03/12/08 04:34:48]
695*2^300844-1 is prime!

user=Free-DC_IronBits
[03/12/08 05:00:32]
603*2^300866-1 is prime!

[B]Admin edit: 19 primes in a 24-hour time frame: 14 top-5000 and 5 non-top-5000.
This is the current standing NPLB record for total primes in 24 hours for n>260K in which there were at least 4 top-5000 primes!![/B]


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