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perfect number |
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perfect number [′pər·fikt ′nəm·bər] (mathematics) An integer which equals the sum of all its factors other than itself. perfect number equal in value to the sum of those natural numbers that are less than the given number but that also divide (with zero remainder) the given number. [Math.: EB, VII: 872] See : Perfection How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The perfect number for, say, a piano-concerto cycle, with enough variety to make listening interesting, yet not so much music as to be overwhelming or - perish the thought - boring. The ancient Greek mathematician Pythagoras, who thought that the world was organized by and could be explained in terms of numbers, considered six to be the most perfect number. By running his own number-theoretic fomulas through a computer, Friedman demonstrated that an odd perfect number must be at least 10 to the 79th power. |
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