[新项目] [数学类] PrimeGrid

taoran

现在用笔记本算PrimeGrid大概13分钟一个WU，用双U机器同时算两个的话，用时会成倍增加（不合算），看来这个最适合单U的机器了。配合BS得分会有部分提升。

GZBW

不知道奖金怎么分配啊;)

Adam_Fs

BS the guy upstairs

烦人

Offline了.

烦人

已恢复.

烦人

2006-11-26 10:28:35 UTC   New Application Testing
PrimeGrid has started testing a new application for more sophisticated prime number searches. The new sub-project is created in collaboration with Twin Prime Search project.

Please note that the new application is in quite early stages of development and might have issues. Therefore it is only sent to people who choose to run test applications. We do not recommend running this application on production systems.

To enable test applications, go to project preferences page and choose to allow test applications.

新程序测试
PrimeGrid已经开始测试一个新的程序,使用了更加优化的查找素数的算法.该子项目将与Twin Prime Search项目相协作.

请注意该新程序还处于开发初期,可能会有问题.因此它将只被发送给选择了"运行测试程序"的用户.我们不推荐大家在工作电脑上运行此程序.

要允许运行测试程序,请在项目设置页面选择允许测试程序.

Real

最近好象特别流行搜索Twin Primes了

在The Prime pages上有一篇关于Prime pages的文章：
http://primes.utm.edu/top20/page.php?id=1

Real

今天在Twin Prime Search的网站上，看到有个叫PrimeGrid的用户，本人估计是PrimeGrid项目的老大，在Status页面里预留了从1010M到1100M的范围，从Pre-Sieved Ranges可以看出他的胃口有多大，凡是黑体字的文件都是他的。

samchoi

我也来算一个，呵呵

这个项目占用内存有点多，算每个WU的时候，内存会每秒十几二十几K地增加，估计一个WU算完的时候能占30M的内存

zglloo

任务不是很大  很快计算完成

Youth

Message to project participant known as "Owner" or "big steve": please contact project administrator at admin@primegrid.com. Your computer has made a significant discovery, and we want to know your details before we publicize it.

名称为Owner或big steve的用户请注意了，请通过上述电子邮件地址联系项目管理员。您的计算机有了一个非常重要的发现（！！），在我们宣布之前希望取得您的详细资料。

Youth

2007-09-03 15:00 UTC

On 20 Aug 2007, 2:40:57 UTC, PrimeGrid's servers returned a positive result in the Woodall Prime Search. It was the double check validating that a Woodall prime was found on 13 Aug 2007, 1:42:08 UTC.

2367906*22367906-1

This is the 32nd and largest known to date Woodall prime. It is 712818 digits long and enters The Largest Known Primes Database (http://primes.utm.edu/primes/) ranked 1st for Woodall primes and 25th overall.

The discovery was made by Stephen Kohlman of Canada using an Intel C2D 6300 @ 1.86 GHz with 1 GB RAM. This computer took a little over 5 hours and 41 minutes to test using the LLR program. Stephen is a member of Team Canada.

还是数学类项目相对容易出成果啊

fwjmath

2007-10-30 9:45 UTC Automatic reporting to the Prime Pages available
From now on you can give permission to PrimeGrid to report the primes you find to the Prime Pages on your behalf. To do this, go to the project preferences page and enter your data.

从现在起您可以授权 PrimeGrid 当您发现质数的时候代表您向 Prime Pages 报告。如果您想这样做的话，请到项目偏好设置页面输入您的信息。

Prime Pages 就是我前几天翻完的那个啊~~~

fwjmath

2007-12-29 21:05 UTC Record breaking Woodall prime
On 21 Dec 2007, 10:09:30 UTC, PrimeGrid's Woodall Prime Search found the 33rd and largest known to date Woodall prime:
3752948*2^3752948-1
The prime is 1,129,757 digits long and enters The Largest Known Primes Database ranked 1st for Woodall primes and 13th overall. It's the first found mega-digit prime using LLR.
The discovery was made by Matthew J. Thompson of the United States using an Intel P4 @ 2.8 GHz with 512MB RAM. This computer took almost 15 hours and 11 minutes to complete the primality test.
在 2007 年 12 月 21 日 10:09:30 UTC，我们的 Woodall 质数搜索发现了第 33 个也是迄今为止最大的一个 Woodall 质数：3752948*2^3752948-1。
这个质数的十进制表示长度为 1129757 位，被收入了已知大质数数据库，大小在已找到的 Woodall 质数中排第一，在所有已找到的最大质数中排第 13。这是第一个用 LLR 发现的“百万位级”的质数。这个发现是在位于美国的 Matthew J. Thompson 的一台 Intel P4 2.8G, 512MB 的机器上得到的。这台机器用了 15 小时 11 分钟完成了素性测试。