| NOUN | a perfect number | perfect numbers |
NOUN article.ind sg | pl
18 translations
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Usage Examples English
- 6 (six) is the natural number following 5 and preceding 7. It is a composite number and the smallest perfect number.
- No Fibonacci number can be a perfect number.
- For example, we can determine whether a given integer is a perfect number, even though we do not have a formula for the "n"th perfect number.
- A related concept is that of a perfect number, which is a number that equals the sum of "its own" proper divisors, in other words a number which forms an aliquot sequence of period 1.
- In mathematics, a multiply perfect number (also called multiperfect number or pluperfect number) is a generalization of a perfect number.
- The sum of those numbers 1 + 2 + 3 + 4 = 10 was for Pythagoreans the perfect number, because it contained in itself "the whole essential nature of numbers".
- Furthermore, all even perfect numbers besides 6 have 44 as the final two digits when expressed in senary, which is proven by the fact that every even perfect number is of the form [...] , where [...] is prime.
- This is equivalent to describing a perfect number [...] as having a sum of divisors [...] equal to [...].
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Contains translations by TU Chemnitz and Mr Honey's Business Dictionary (German-English only).
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