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发表于 2005-10-18 09:16:21
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42nd Known Mersenne Prime Found!
On February 18, 2005, Dr. Martin Nowak from Germany, found the new largest known prime number, 225,964,951-1. The prime number has 7,816,230 digits! It took more than 50 days of calculations on Dr. Nowak's 2.4 GHz Pentium 4 computer. The new prime was independently verified in 5 days by Tony Reix of Grenoble, France using a 16 Itanium CPU Bull NovaScale 5000 HPC running the Glucas program by Guillermo Ballester Valor of Granada, Spain. A second verification was completed by Jeff Gilchrist of Elytra Enterprises Inc. in Ottawa, Canada using 15 days of time on 12 CPUs of a Compaq Alpha GS160 1.2 GHz CPU server at SHARCNET.
Dr. Martin Nowak, an eye surgeon in Michelfeld, Germany learned of GIMPS in April 1999 when he read an article in his newspaper, the "Frankfurter Allgemeine Zeitung". Dr. Nowak, a math hobbyist, started with one PC and as his practice grew so did his participation in GIMPS. Six years later, he has 24 computers doing calculations for GIMPS -- and one Mersenne Prime to his credit!
Perfectly Scientific, Dr. Crandall's company which developed the FFT algorithm used by GIMPS, makes a poster you can order containing the entire number. It is kind of pricey because accurately printing an over-sized poster in 1-point font is not easy! Makes a cool present for the serious math nut in your family.
Dr. Nowak could not have made this discovery alone. In recognition of contributions made by tens of thousands GIMPS volunteers, credit for this new discovery will go to "Nowak, Woltman, Kurowski, et al". The discovery is the eighth record prime for the GIMPS project. Join now and you could find the next record-breaking prime! You could even win some cash.
For more information on this latest prime discovery read the full press release.
第42个梅森素数被发现!
2005年2月18日,德国的Dr.Martin Nowak发现了已知的最大素数,2^25,964,951-1。这个素数共有7,816,230位数!在Nowak的P4-2.4GHz的电脑上计算了超过50天。这个新素数被法国格勒诺布尔的Tony Reix在5天时间独立检验,动用了拥有16个安腾处理器的Bull NovaScale 5000 HPC,检验程序是西班牙Guillermo Ballester Valor编写的Glucas程序。第二次检验是由加拿大渥太华的Jeff Gilchrist在15天内完成的,动用了一台拥有12个1.2GHz处理器的Compaq Alpha GS160。
此次发现新素数的Dr.Martin Nowak是眼科医生,在1999年4月通过读报得知GIMPS项目。他同时也是数学爱好者,于是他使用他的个人电脑开始运行GHIMPS。6年后,他已经由24台电脑在为GIMPS工作,而且现在,已经有了一个发现素数的成果。
想了解详细信息,请查阅英语版的新闻发布。 |
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