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A composite number is a positive integer with three or more divisors. Every integer (excluding one and zero) is either a prime number or a composite number. The integer 14 is a composite number because it has divisors 1, 2, 7, and 14 (four divisors). Note that a square number will always have an odd number of divisors (9 has divisors 1, 3, 9) while a non-square number always has an even number of divisors.

Because the number 1 and the composite number itself are not prime numbers, a composite number can also be defined as "a non-prime number with one or more prime factors".

Properties

All even numbers greater than 2 are composite numbers.
All composite numbers are non-primes.
The smallest composite number is the number 4
For all composite number greater than 4

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Topics: Composite Number, Composite Cable, Composite Armour...

Composite cableIn telecommunication, a composite cable is a communications cable having both optical and metallic signal-carrying components. Note 1: A cable having optical fiber(s) and a metallic component, e. a metallic twisted pair, used solely for conduction of elec	Composite armourComposite armour is a type of armour consisting of layers of different material such as metals, plastics, ceramics or air. Most composite armours are lighter than their all-metal equivalent, but instead occupy a larger volume for the same resistance to pe	Composite numberA composite number is a positive integer with three or more divisors. Every integer (excluding one and zero) is either a prime number or a composite number. The integer 14 is a composite number because it has divisors 1, 2, 7, and 14 (four divisors).
CompositeThe term composite can refer to several different things: A composite number is an integer greater than one that is not a prime number. A composite material is a material that is made from several different elements. Examples of this include composite arm	Composite videoComposite video is the format of an analog television signal before it is modulated onto an RF carrier. It is usually in a standard format such as NTSC, PAL or SECAM. It is a composite of three source signals called Y, U and V (together referred to as YUV	Composite materialComposite materials (or composites for short) are engineering materials made from two or more components. One component is often a strong fibre such as fiberglass, kevlar or carbon fibre that gives the material its tensile strength, while another componen
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Composites

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