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Difference between revisions of "Factor"

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A '''factor''' is one of the numbers or expressions that make up another number by [[multiplication]]. Let a and b be integers. Then a divides b (which may be written a | b ) if there is an integer c such that a * c = b. It is then said that c and a are factors or divisors of b, that b is divisible by c, and that b is a multiple of c.
 
A '''factor''' is one of the numbers or expressions that make up another number by [[multiplication]]. Let a and b be integers. Then a divides b (which may be written a | b ) if there is an integer c such that a * c = b. It is then said that c and a are factors or divisors of b, that b is divisible by c, and that b is a multiple of c.
  
A number that has no factors other than itself and 1 is a [[prime number]], and a number that has factors other than itself and 1 is called a [[composite|composite number]].
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A number that has no factors other than itself and 1 is a [[prime number]], and a number that has factors other than itself and 1 is called a [[composite number]].
  
 
==See also==
 
==See also==

Revision as of 22:45, 19 January 2019

A factor is one of the numbers or expressions that make up another number by multiplication. Let a and b be integers. Then a divides b (which may be written a | b ) if there is an integer c such that a * c = b. It is then said that c and a are factors or divisors of b, that b is divisible by c, and that b is a multiple of c.

A number that has no factors other than itself and 1 is a prime number, and a number that has factors other than itself and 1 is called a composite number.

See also