factor is used to list all prime factors of each integer number.
$ factor [NUMBER]...
will list every prime factor the the list of input numbers. The other main usage for
with no command line arguments, input will be read from standard input.
$ factor [NUMBER1] [NUMBER2]...
Useful Options / Examples
There are very few options for factor. there are only two.
$ factor --help
will display a help file and exit.
$ factor --versions
will display version information and exit.