Weird Number

In number theory, a weird number is a natural number that is abundant but not semiperfect. In other words, the sum of the proper divisors (divisors including 1 but not itself) of the number is greater than the number, but no subset of those divisors sums to the number itself.

Read more about Weird Number:  Examples, Properties, In Popular Culture

Famous quotes containing the words weird and/or number:

    Pregnant women! They had that weird frisson, an aura of magic that combined awkwardly with an earthy sense of duty. Mundane, because they were nothing unique on the suburban streets; ethereal because their attention was ever somewhere else. Whatever you said was trivial. And they had that preciousness which they imposed wherever they went, compelling attention, constantly reminding you that they carried the future inside, its contours already drawn, but veiled, private, an inner secret.
    Ruth Morgan (1920–1978)

    Of all reformers Mr. Sentiment is the most powerful. It is incredible the number of evil practices he has put down: it is to be feared he will soon lack subjects, and that when he has made the working classes comfortable, and got bitter beer into proper-sized pint bottles, there will be nothing left for him to do.
    Anthony Trollope (1815–1882)