mersenneforum.org  

Go Back   mersenneforum.org > Search Forums

Showing results 1 to 25 of 133
Search took 0.03 seconds.
Search: Posts Made By: LiquidNitrogen
Forum: Lounge 2011-08-05, 01:46
Replies: 513
Views: 26,639
Posted By LiquidNitrogen
When you see "PrimeCare" painted on a van

So today on the way back from JP Morgan Chase bank in Wilmington, Delaware, I saw a van with "PrimeCare, Milford, DE" painted on the side of it. It took me 3 traffic lights to catch up to him and a...
Forum: No Prime Left Behind 2011-08-04, 00:49
Replies: 18
Views: 12,797
Posted By LiquidNitrogen
Now that is cool, thanks! Do you have that...

Now that is cool, thanks! Do you have that factor.exe program that is being referred to in the documentation? I went to the website it was linked to, but that site is down now.

Why can't authors...
Forum: No Prime Left Behind 2011-08-04, 00:36
Replies: 18
Views: 12,797
Posted By LiquidNitrogen
Ok, so I think I have it now. Is this spreadsheet...

Ok, so I think I have it now. Is this spreadsheet correct then?

6875
Forum: No Prime Left Behind 2011-08-03, 15:11
Replies: 18
Views: 12,797
Posted By LiquidNitrogen
I'm not sure I follow. Here is what I did. ...

I'm not sure I follow. Here is what I did.

1. Proving p = 2^n - 1 is prime for n = 5, p = 31.
2. S(0) = 4 {defined}
3. Need to generate up to S(n-2) where S(x+1) = [S(x) * S(x)] - 2

3a. S(1)...
Forum: No Prime Left Behind 2011-08-03, 04:38
Replies: 18
Views: 12,797
Posted By LiquidNitrogen
I did find one typo on...

I did find one typo on http://primes.utm.edu/prove/prove1.html

In 2002 a long standing question was answered: can integers be prove prime

I think this should be changed to the word proven...
Forum: No Prime Left Behind 2011-08-03, 03:20
Replies: 18
Views: 12,797
Posted By LiquidNitrogen
That makes the point crystal clear. I haven't...

That makes the point crystal clear. I haven't seen any online resources offering such a concise explanation.



The first answer you gave answers this one. With such a huge gap in the prime...
Forum: Information & Answers 2011-08-03, 03:06
Replies: 7
Views: 1,202
Posted By LiquidNitrogen
Many thanks!

Many thanks!
Forum: Information & Answers 2011-07-31, 20:22
Replies: 7
Views: 1,202
Posted By LiquidNitrogen
I can only find links to FermFact 0.9 can you...

I can only find links to FermFact 0.9 can you show me where to download it?
Forum: Math 2011-07-30, 01:34
Replies: 20
Views: 1,648
Posted By LiquidNitrogen
pi(x) = x/[ln(x) - 1.08] was offered as one...

pi(x) = x/[ln(x) - 1.08] was offered as one "improvement", very long time ago.
Forum: Soap Box 2011-07-30, 01:27
Replies: 740
Views: 46,067
Posted By LiquidNitrogen
The debt problem can be solved in 2 easy steps. ...

The debt problem can be solved in 2 easy steps.

1. Flat tax, no deductions. Poor? Too bad, pay the lower tax and deal with it. Rich? We're sticking it to you the same percent as the poor, so stop...
Forum: Hardware 2011-07-30, 01:11
Replies: 11
Views: 789
Posted By LiquidNitrogen
Yes that would be nice. But I found...

Yes that would be nice. But I found hyper-threading produces a tremendous amount of heat on each core when it is active and being used.

Download this (better do it fast, mods have a tendency to...
Forum: Hardware 2011-07-29, 23:37
Replies: 11
Views: 789
Posted By LiquidNitrogen
I have a 5.0 GHz i5-2500K, which has no...

I have a 5.0 GHz i5-2500K, which has no hyperthreading.

In my experiments, I have found that in using only 2 cores with LLR, LLR can "steal" processor time from my unused cores, and performance is...
Forum: Hardware 2011-07-29, 23:23
Replies: 11
Views: 1,036
Posted By LiquidNitrogen
I love when I get calls like that! I totally...

I love when I get calls like that!

I totally make up stuff when I know I have a clown on the phone.

"My computer is saying it has 2 terabytes of RAM but only 80K of disk space available so it...
Forum: No Prime Left Behind 2011-07-29, 23:19
Replies: 18
Views: 12,797
Posted By LiquidNitrogen
So I guess that means when we "discover" primes...

So I guess that means when we "discover" primes of the various forms, they are much larger than the primes that are known to exist in continuity, and therefore they are "real discoveries," in a...
Forum: Information & Answers 2011-07-29, 23:14
Replies: 7
Views: 1,202
Posted By LiquidNitrogen
I looked at some constants with Nash weights <...

I looked at some constants with Nash weights < 2500. After the "initial sieving" in NewPGen, where it first displays the results after a period of noise free operation, some of them had already...
Forum: No Prime Left Behind 2011-07-26, 23:54
Replies: 18
Views: 12,797
Posted By LiquidNitrogen
Continuity of Primes

With all of the various ways to generate primes (Riesel, Proth, Mersenne etc) there seems to be quite a few "gaps" that must occur in the "plain old" primes that can't be expressed with an elegant,...
Forum: Information & Answers 2011-07-26, 23:49
Replies: 7
Views: 1,202
Posted By LiquidNitrogen
Nash Weights vs. Sievability

I am wondering if there is a relationship governing how well a candidate Riesel prime is sieved vs. its Nash weight.

It seems that low Nash weights, which generate fewer primes, also seive very...
Forum: GPU Computing 2011-07-26, 23:25
Replies: 31
Views: 1,685
Posted By LiquidNitrogen
They happen often enough in the programming...

They happen often enough in the programming world, they get their own nickname: Fencepost errors

http://en.wikipedia.org/wiki/Off-by-one_error
Forum: Software 2011-07-20, 00:53
Replies: 18
Views: 7,133
Posted By LiquidNitrogen
I'd like to share something that you may find...

I'd like to share something that you may find interesting.

One of the computers I built in Dec 2010 was starting to behave oddly in the March 2011 timeframe. I ran every stress test I could think...
Forum: Hardware 2011-07-20, 00:40
Replies: 2
Views: 653
Posted By LiquidNitrogen
Now that is cool! I don't know about the...

Now that is cool!

I don't know about the prices he was quoting for that build though. Seemed way too low.
Forum: Riesel Prime Search 2011-07-17, 23:04
Replies: 372
Views: 34,164
Posted By LiquidNitrogen
Ahh, I see, thanks.

Ahh, I see, thanks.
Forum: Riesel Prime Search 2011-07-17, 12:15
Replies: 372
Views: 34,164
Posted By LiquidNitrogen
Sorry, didn't mean to imply they were all even,...

Sorry, didn't mean to imply they were all even, just a "wide range of them" were. I've only sieved on odd powers with fixed exponents, so I was not used to seeing them.



Wow!...
Forum: GPU Computing 2011-07-16, 21:06
Replies: 39
Views: 2,094
Posted By LiquidNitrogen
As having built over 200 systems personally, I...

As having built over 200 systems personally, I would like to impart a few words of wisdom regarding power supplies.

Something that is not on most people's radar when it comes to the Power Supply...
Forum: Information & Answers 2011-07-16, 20:50
Replies: 9
Views: 1,057
Posted By LiquidNitrogen
That was the most articulate, well-written...

That was the most articulate, well-written explanation I have experienced as a result of asking a question that I posted to this forum.

Thanks 10^6 + 1
Forum: Riesel Prime Search 2011-07-16, 18:44
Replies: 372
Views: 34,164
Posted By LiquidNitrogen
How deeply sieved and choice of exponents

I noticed instead of a large range of k values, the list I am crunching right now has a few small ks and a wide range of even exponents.

I am wondering how deeply this file was sieved, and what...
Showing results 1 to 25 of 133

 
All times are UTC. The time now is 13:40.

Wed Jun 3 13:40:06 UTC 2020 up 70 days, 11:13, 2 users, load averages: 1.18, 1.43, 1.41

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.