Definition of Perfect number. Meaning of Perfect number. Synonyms of Perfect number

Here you will find one or more explanations in English for the word Perfect number. Also in the bottom left of the page several parts of wikipedia pages related to the word Perfect number and, of course, Perfect number synonyms and on the right images related to the word Perfect number.

Definition of Perfect number

Perfect number
Perfect Per"fect, a. [OE. parfit, OF. parfit, parfet, parfait, F. parfait, L. perfectus, p. p. of perficere to carry to the end, to perform, finish, perfect; per (see Per-) + facere to make, do. See Fact.] 1. Brought to consummation or completeness; completed; not defective nor redundant; having all the properties or qualities requisite to its nature and kind; without flaw, fault, or blemish; without error; mature; whole; pure; sound; right; correct. My strength is made perfect in weakness. --2 Cor. xii. 9. Three glorious suns, each one a perfect sun. --Shak. I fear I am not in my perfect mind. --Shak. O most entire perfect sacrifice! --Keble. God made thee perfect, not immutable. --Milton. 2. Well informed; certain; sure. I am perfect that the Pannonains are now in arms. --Shak. 3. (Bot.) Hermaphrodite; having both stamens and pistils; -- said of flower. Perfect cadence (Mus.), a complete and satisfactory close in harmony, as upon the tonic preceded by the dominant. Perfect chord (Mus.), a concord or union of sounds which is perfectly coalescent and agreeable to the ear, as the unison, octave, fifth, and fourth; a perfect consonance; a common chord in its original position of keynote, third, fifth, and octave. Perfect number (Arith.), a number equal to the sum of all its divisors; as, 28, whose aliquot parts, or divisors, are 14, 7, 4, 2, 1. See Abundant number, under Abundant. --Brande & C. Perfect tense (Gram.), a tense which expresses an act or state completed.

Meaning of Perfect number from wikipedia

- In number theory, a perfect number is a positive integer that is equal to the sum of its proper positive divisors, that is, the sum of its positive divisors...
- A unitary perfect number is an integer which is the sum of its positive proper unitary divisors, not including the number itself. (A divisor d of a number...
- mathematics, a multiply perfect number (also called multiperfect number or pluperfect number) is a generalization of a perfect number. For a given natural...
- Perfect Number (Hangul: 용의자X; RR: Yonguija X; lit. Suspect X) is a 2012 South Korean mystery-drama film directed by Bang Eun-jin. Adapted from Keigo Higashino's...
- 1^{3}+3^{3}+\dots +57^{3}=(41\cdot 29)^{2}} and so on. Also, every even perfect number, except the lowest, is the sum of the first 2p−1/2 odd cubes (p = 3...
- In number theory, a perfect totient number is an integer that is equal to the sum of its iterated totients. That is, we apply the totient function to a...
- (PPDI), an Armstrong number (after Michael F. Armstrong) or a plus perfect number) is a number that is the sum of its own digits each raised to the power...
- In mathematics, an almost perfect number (sometimes also called slightly defective or least deficient number) is a natural number n such that the sum of...
- covers some range of natural numbers k ≥ √m. A square number cannot be a perfect number. The sum of the n first square numbers is ∑ n = 0 N n 2 = 0 2 + 1 2...
- smaller perfect numbers are discovered. It is known there is no odd perfect number below 101500. GIMPS reported that by 8 April 2018 the search for Mersenne...
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