A little multiplication exercise
Apr. 4th, 2007 05:25 pm![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
fivemackWhy not multiply out
1907145664709063958354268537876114943171 * 2282249079063136761889376337454791894323802478621 * 1327437030532454031084789475205826920108788207304808616927065055833914814194080582426819377847
[the hardware and software state of the art is such that factoring 130-digit general numbers, or 180-digit numbers of sufficiently special shape, takes about a week on a 2007-vintage desktop computer using free software; there are various bits of the software you can tweak which I suspect can get that down to four or five days]
1907145664709063958354268537876114943171 * 2282249079063136761889376337454791894323802478621 * 1327437030532454031084789475205826920108788207304808616927065055833914814194080582426819377847
[the hardware and software state of the art is such that factoring 130-digit general numbers, or 180-digit numbers of sufficiently special shape, takes about a week on a 2007-vintage desktop computer using free software; there are various bits of the software you can tweak which I suspect can get that down to four or five days]
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no subject
Date: 2007-04-05 05:39 pm (UTC)I have several times spent a day coding and set a computer running for a week to find the smallest number with some interesting property, then googled for that number and found the Web page by the person who had found it earlier ...