what are composite numbers?

Acomposite numberis apositive integerthat has at least one positivedivisorother than one or itself. In other words a composite number is any positiveintegergreater thanonethat isnota prime number

Some Eg:

10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25, 26, 27, 28, 30,

Composite numbers are the numbers which have more than one factor, that is, it is exactly divisible by more than two numbers. An example might help you to understand this better...

Let's take the number 50- it is divisible by 1,50,2,25,5,10.

composite numbers are the numbers that have the more than two factors

eg1. 24 and 32

Acomposite numberis apositive integerthat has at least one positivedivisorother than one or itself. In other words, a composite number is any positiveintegergreater thanonethat isnotaprime number.

So, ifn0 is an integer and there are integers 1 prime numberor a composite number. The number one is aunit;it is neither prime nor composite. For example, the integer14is a composite number because it can be factored as2×7. Likewise, the integers 2 and 3 are not composite numbers because each of them can only be divided by one and itself.

The first 105 composite numbers (sequenceA002808inOEIS) are

Every composite number can be written as the product of two or more (not necessarily distinct) primesfurthermore, this representation is unique up to the order of the factors. This is called thefundamental theorem of arithmetic.

There are several knownprimality teststhat can determine whether a number is prime or composite, without necessarily revealing the factorization of a composite input.

the numbers having more than two factors are known as composit numbers

Composite number is an integer that is divisible without remainder by at least one positive integer other than itself and one.

Example:

6 is a composite number, since it is divisible by 2 and 3 also.

A composite numberis apositive integerthat has at least one positivedivisorother than one or itself. In other words, a composite number is any positiveintegergreater thanonethat isnotaprime number.

So, ifn0 is an integer and there are integers 1prime numberor a composite number. The number one is aunit;it is neither prime nor composite. For example, the integer14is a composite number because it can be factored as2ï½7. Likewise, the integers 2 and 3 are not composite numbers because each of them can only be divided by one and itself.

The first 105 composite numbers (sequenceA002808inOEIS) are

4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25, 26, 27, 28, 30, 32, 33, 34, 35, 36, 38, 39, 40, 42, 44, 45, 46, 48, 49, 50, 51, 52, 54, 55, 56, 57, 58, 60, 62, 63, 64, 65, 66, 68, 69, 70, 72, 74, 75, 76, 77, 78, 80, 81, 82, 84, 85, 86, 87, 88, 90, 91, 92, 93, 94, 95, 96, 98, 99, 100, 102, 104, 105, 106, 108, 110, 111, 112, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 128, 129, 130, 132, 133, 134, 135, 136, 138, 140.

Every composite number can be written as the product of two or more (not necessarily distinct) primesfurthermore, this representation is unique up to the order of the factors. This is called thefundamental theorem of arithmetic.

There are several knownprimality teststhat can determine whether a number is prime or composite, without necessarily revealing the factorization of a composite input.

a number with 3 or more factors

A composite numberis apositive integerthat has at least one positivedivisorother than one or itself. In other words, a composite number is any positiveintegergreater thanonethat isnotaprime number.

So, ifn0 is an integer and there are integers 1prime numberor a composite number. The number one is aunit;it is neither prime nor composite. For example, the integer14is a composite number because it can be factored as2x7. Likewise, the integers 2 and 3 are not composite numbers because each of them can only be divided by one and itself.

The first 105 composite numbers (sequenceA002808inOEIS) are

4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25, 26, 27, 28, 30, 32, 33, 34, 35, 36, 38, 39, 40, 42, 44, 45, 46, 48, 49, 50, 51, 52, 54, 55, 56, 57, 58, 60, 62, 63, 64, 65, 66, 68, 69, 70, 72, 74, 75, 76, 77, 78, 80, 81, 82, 84, 85, 86, 87, 88, 90, 91, 92, 93, 94, 95, 96, 98, 99, 100, 102, 104, 105, 106, 108, 110, 111, 112, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 128, 129, 130, 132, 133, 134, 135, 136, 138, 140.

Every composite number can be written as the product of two or more (not necessarily distinct) primesfurthermore, this representation is unique up to the order of the factors. This is called thefundamental theorem of arithmetic.

There are several knownprimality teststhat can determine whether a number is prime or composite, without necessarily revealing the factorization of a composite input.

A number which has more than 2 factors is called as composite numbers.