| Currently there may be errors shown on top of a page, because of a missing Wiki update (PHP version and extension DPL3). |
Navigation
| Topics | Help • Register • News • History • How to • Sequences statistics • Template prototypes |
Difference between revisions of "Factor"
(restored) |
m |
||
| Line 1: | Line 1: | ||
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 [[ | + | 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.
